Helicopter Parent

As the most literal of helicopter parents, a ruby-throated hummingbird mom (RTH, Archilochus colubris) takes hovering to a whole new competitive level.

In the case of this feathered sprite (2.8 – 3.5″ long, including bill, and just over 1/10 of an ounce), though, the word “hover” has more to do with the ability to fly than with over-protective child rearing. Which is not to suggest that an RTH mom is neglectful. Far from it… she’s just a bit Type A.

Both male and female RTHs winter in Central America or along the southern tip of Florida, but from the moment a gal returns to her summer stomping grounds in the eastern half of the US or southern Canada, she’s all go-go-go… because her biological clock is ticking like a stopwatch.

Barely hesitating to catch her breath, the first order of business is to find a baby daddy. She’s not looking for ever-after; Mr. Right-for-Now will do as long as he’s strong and handsome. Since the males of her clan aren’t the slightest bit interested in becoming a Mr. Mom this arrangement suits everyone just fine. With barely a look backward by either party following their four-second assignation, he jets off to find another hookup, and she speeds away to shop for flower-down to line the bassinet.

It takes about six days for this mom-to-be to fashion a nest barely wide enough to hold a bottle cap, and tether it to a foundation with strands of spider silk. RTH nests are most often built on a tree branch but unusual alternatives, including loops of chain or extension cord, have proven acceptable in a pinch. Darting back and forth, the female will weave bud scales, lichen, hair or fur, and other creatively repurposed found objects into a cup-shaped cradle. Next, she’ll adorn the nest with lichen and moss, finally lining the interior with a soft, insulating layer.

Once the nursery has been prepared and decorated, 1-3 eggs the size of your pinkie fingernail will appear, and then… a pregnant pause.

Think about it. The longest stretch this single mother ever sits down, during her entire life, is to incubate a clutch of future hummers. Imagine, if you will, the kind of patience, willpower, and elevated estrogen levels it takes for a creature who has lived on the wing, perpetually flitting hither and yon since leaving her own natal nest, to STOP…  settle in… and then just…

……………………sit…

…………………………..for 12-14…..

……………………………………………..long…..

………………………………………………………….idle…..

……………………………………………………………………..days.

During this time, the newly stationary creature will leave her nest only for brief breaks to stretch or grab a bite to eat. She’ll anchor there, day and night, rain or shine. No baby shower, no friends stopping by to say hello; they’re all brooding their own nest eggs. No television, even though this would be a great time to binge watch David Attenborough’s The Life of Birds. No smartphone at the ready to check email, take selfies, and whine to everyone on Facebook that she is bored beyond reason.

Heck, when I manage to stop and meditate for ten minutes two days in a row I feel like a Zen Master.

Once the chicks hatch it’s back to her normal hyperactive life… and then some. RTH nestlings are naked and wobbly-headed, with an appetite that dwarfs their bitty bodies. For the next few weeks, Mom will need to make 1-3 grocery runs per hour,  from dawn to dusk, regurgitating the food she’s foraged and hauled home in her belly into the beseeching beak of each precious child.

Once the babes fledge at 18-22 days old they’ll disperse among the branches… not too far away from the nest or each other initially, but spaced out enough to make dinner deliveries much less efficient for their harried mother. As the kids grow stronger and bolder, they’ll spread out further, testing their own wings… and Mom’s ability to be everywhere all at once.

Oh, and somewhere in that frantic schedule, this solo parent also needs to down enough calories to keep her own metabolism running on all cylinders.

Luckily, she flies like a super-charged, hyper fuel-efficient, über-nimble helicopter. Hummingbirds have been known to reach speeds of nearly 35 mph (55 kph), which is certainly impressive. Not record-breaking among the avian set, though. The difference is that most of the planet’s fastest feathered fliers reach their top speeds in a dive, asking gravity to add a significant boost to their velocity. Acrobatic RTHs can fly straight and fast, too, but it’s their ability to achieve what those avian missiles can’t—a true hover—that sets them apart.

This isn’t using a thermal to save energy, like vultures, ravens, petrels, and other long-winged birds do. That’s soaring. Hummingbirds move their wings in a figure-eight pattern at over 50 beats per second, allowing them to stop on a dime or adjust their position up, down, forward, or backward. That frenetic rhythm is also creates the humming noise that’s the source of their common name.

It also helps that the lady’s jet fuel of choice is syrup. Flower nectar, to be more precise, accounts for approximately 90% of an adult hummingbird’s daily caloric intake. RTHs and other hummers have a large surface-area:body-mass ratio, which means they lose a lot of heat in the normal course of living. Plus, their metabolism is so high they have to enter a torpor once a day, between sunset and sunrise, just to make it through the night without having to recharge.

Unlike the sugar-water mixtures backyard bird enthusiasts cook up to fill hanging feeders, blossom juice consists of more than just sucrose (from which plain white table sugar is derived). Flowers also produce fructose and glucose, as well as amino acids, antioxidants, calcium and other trace minerals, lipids, phosphates, and some protein. Other sources of protein include insects that have found their way inside the flower’s throat, where they are slurped up along with the nectar. Hummingbirds will also glean aphids from plants, pluck spiders from their webs, and nab flying insects mid-air. During breeding season, female RTHs spend a lot of time catching insects because nestlings need a high protein diet to grow and develop properly. Once they mature they’ll gradually switch to the high-carb diet of an adult.

As befits a fast-paced life, in barely the blink of an eye (or the wing-beat of a hummingbird) summer is over. Male RTHs often head south first, in early August. Females tend to delay departure until late August or sometime in September. After months of feeding others—our feathered Supermom may have raised as many as three broods in a single season—the time has come to focus on self-care, and on building enough fat reserves to power through an 18-22 hour non-stop flight across the Gulf of Mexico.

The last of her children have left the nest and are, hopefully, ready for their first migration. RTHs are solitary migrators so Mom’s helicopter parenting days are over… until next year.

Because a mother’s work is never really done.


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© 2019 Next-Door Nature. no reprints without written permission from the author (I’d love for you to share my work–just ask first). Thanks to these photographers for making their work available through a Creative Commons license (from top to bottom): Dan Pancamo, Steve Rider, TCDavis, BudOhio, ssemone, BudOhio, and Henry T. McLin.

Bull Session

I say potato, you like potahtos. You wear pajamas, I wear PJs. And a rose by any other name, we’re told, would smell equally sweet. So does it really matter that we all agree on what to call an American bullfrog? 

“HELL, YEAH!” 

That’s the collective cry of taxonomists around the globe raising their voices in indignant protest. (Yes, these are men and women of strong, science-based convictions.) You see, to a biologist who studies the classification of organisms, names are not at all trivial… but they should all be binomial.

Swedish botanist Carl Linnaeus is credited with introducing this ubiquitous classification system, based on bestowing a unique two-word Latin name upon each species, precisely to avoid the kind of misunderstandings that arise when you say ersters and I say oysters.

Or, for example, when one scientist is talking about a fish using one of its common names, “dolphin” (Coryphaena hippurus, aka mahi-mahi, dorado, pompano), and another scientist hears “dolphin” and thinks of a perpetually-smiling bottlenose marine mammal (Tursiops truncatus).

And yet, despite Carl’s best efforts, disagreements persist. As in the case of the American bullfrog, whose official Latin name (Rana catesbeiana or Lithobates catesbeianus, depending on whom you ask) is more likely to be disputed and cause confusion, ironically, than its common name.

The quibble over nomenclature began about 10 years ago and quickly became a quarrel. Darrel Frost, Herpetology Curator at the American Museum of Natural History, suggested a conceptual leap that would divide members of the genus Rana, which includes bullfrogs, into nearly a dozen new genera. Many of Frost’s colleagues, unconvinced that his argument held water, refused to jump into the newly proposed systematics pond.

In response, feelings, opinions, and counter-claims have been aired publicly in peer-reviewed journals. Several years ago, a group of international researchers created a consortium to promote their own preferred adaptation of the froggy family tree. The taxonomy community still hasn’t managed to harmonize this chorus, which is why she says Rana and he says Lithobates.

But hold on… let’s not call the whole thing off just yet.Because, of course, a bullfrog doesn’t need a taxonomist to know exactly who he or she is… once s/he reaches a certain age, anyway.

Sure, there may be some gender ambiguity early on but that’s common among young amphibians. Their sex is determined genetically, although research suggests that for many frog species, exposure to environmental estrogen or variations in water temperature during tadpole-hood can induce male-to-female or female-to-male transitions. Self awareness doesn’t always come easily, and it can take some time for those gender identity questions to work themselves out. Bullfrog development is relatively slow—one to three years from egg to adult, and another two years to reach sexual maturity.

By the time they’re ready to procreate, however, males and females have definite, discernible physical differences. Males are smaller than females, their tympana (external eardrums) are larger than their eyes, and when in breeding condition their throats are yellow; female tympana are equal or smaller in size than their eyes, and their throats are white. There are behavioral distinctions as well—male bullfrogs are territorial over the summer mating season, and quite vocal about it, too; females are relatively silent, although older gals have been known to sing along with the guys. (I have a sneaking suspicion their favorite tune is If I Were A Boy.)

Ok, ok… life, in all it forms, is full of uncertainty and differences of opinion, at the laboratory bench and the water’s edge. But can we all come together on this much, at least? That the creatures featured throughout this post are:

a. Amphibians

b. Bullfrogs

c. Cool.

Everything else is neether/nyther here nor there.


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© 2018 Next-Door Nature. Reprints welcomed with written permission from the author. Thanks to the following photographers who made their work available through the Creative Commons license: Mark Beckemeyer, LadyDragonflyCC, Greg Schechter, Rick Cameron, and Kaibab National Forest.

Telephone

This university town is always less crowded during the summer. Most students are at home or on summer internships, faculty and graduate students are using the break to slip away for some R&R or doing research at field sites, and there are no home football games to bring in alumni and supporters of the opposing team.  While I enjoy the school year, and recognize how much Blacksburg depends on the university and related personnel, I do my best to pause and catch my breath from mid-May to mid-August.

That includes plenty of walks with my wire fox terrier, Dash, along a leafy section of the Huckleberry Trail, a former railroad easement. Tt’s rare for Dash and I to have the Huckleberry trail all to ourselves, at least not for very long. Usually we share with cyclists, runners, and other dog-walkers.

But one mid-July day was an exception. I guess we must have left a bit later than usual, but regardless of the reason, the trail and surrounding suburban backyards were quiet enough for me to hear a feathered fellow shouting his heart out from the power lines above.

I peered skyward and saw the black, white, and terra cotta of an Eastern towhee (Pipilo erythrophthalmus)). I’ve read descriptions of this bird’s call as “Drink your tea!” but to my ears it sounds like, “Drink your tea-hehehehe!”

I stood still for as long as Dash could stand it, enjoying the sight and sound of a serious sparrow with a major case of the giggles. Then we picked up the pace and continued walking.

 

 

Several minutes later… more giggling. Were we being followed? Most likely is was a different individual; it was breeding season, after all, and males tend not to stray far from home base and the Mrs.

 

 

 

 

Further down the trail… more tea, more giggles. I felt like I was hearing a musical baton passed from one bird to the next in an auditory relay…

 

 

 

 

Drink your tea-hehehehe!…

 

 

 

 

 

Drink your tea-hehehehe!…

 

 

 

 

 

Drink your tea-hehehehe!

 

 

 

 

I can recognize a game of Telephone when I hear it! In this case, though, all of the players were excellent listeners who repeated the phrase exactly, with perfect fidelity and zero degradation. Since garbled messages are the whole point and fun of Telephone, I wasn’t sure why all these towhees were laughing.

I’ve heard recorded birds calls I couldn’t distinguish by ear but the sonograms (graphical representations of sound) showed clear variations my hearing wasn’t sensitive enough to notice. Maybe if I had Towhee ears I’d be in on the joke.

When Dash and I returned home I had the strangest craving for a cup of tea (strange because I don’t even like tea).


Who’s playing telephone in your neighborhood?  Share your experiences and comments below! And if you’d like a little Next-Door Nature delivered right to your inbox, click the “subscribe” link in the upper right-hand corner of this page to receive notifications for new posts!

[© 2018 Next-Door Nature, Sidewalk Zendo. Reprints welcomed with written permission from the authorThanks to the following photographers for making their work available through the Creative Commons license: Pat Gaines, Alberto_VO5, devra, Mike’s Birds, Amanda, Ken Schneider, marneejill, and Keith Carver.]

Vert-de-Gris

Cope’s gray treefrog on a pepper plant. Photo: Alan Howell © 2017, Star Path Images, Used with Permission.

It isn’t easy being green. Kermit the Frog said it, so you know it has to be true.

He’s always seemed a reluctant celebrity, so my guess is that being the most famous Muppet-amphibian on the planet isn’t always a picnic. I wonder whether life would be a little less stressful if, like some of his cousins, Kermit could change from green to another color when he’d rather not be so conspicuous.

North American gray treefrogs know how to be seen and when to blend into their surrounding, shifting the spectrum from bright emerald to peridot, to gold, copper, platinum, silver, and even gunmetal. Since the places they hang out — trees and shrubs in woodlands, meadows, prairies, swamps, suburbs, and cities — tend toward palettes awash with green and gray hues, these arboreal amphibians can keep their sartorial choices simple. 

What looks like a costume change is actually a rather high-tech, cellular-level special effect created by chromatophores. These pigment-containing and light-reflecting cells, or groups of cells, are present in the skin of certain frogs, as well as some reptiles (including chameleons), cephalopods (such as octopi), fish, and crustaceans. Mammals and birds, on the other hand, have melanocytes, a different class of cells for coloration.

Chromatophores are classified based on their hue under white light:

  • melanophores (black/brown)
  • cyanophores (blue)
  • erythrophores (red)
  • xanthophores (yellow)
  • leucophores (white)
  • iridophores (reflective or iridescent)

The process, known as physiological color change, can be controlled by hormones, neurons, or both. Most studies have focused primarily on melanophores because they are the darkest and, therefore, the most visible. When pigment inside the chromatophores disperses throughout cell the skin appears to darken; when pigment aggregates in cells the skin appears to lighten. Either way, you’ve got an amazing makeover, or a convincing disguise, in no time flat! 

There’s even more to the gray treefrog’s ability to assume an alter-ego than meets the eye —what appears to be a single species is actually two very close relatives: Hyla versicolor, aka Eastern, although there’s a long list of pseudonyms from which to choose (there are more ways to hide than blending into the substrate); and Hyla chrysoscelis, aka Cope’s (which also has a couple of nicknames but not as many as H. versicolor).

Cope’s and Eastern are equally skilled at clinging to and climbing slick surfaces using large toe pads that secrete mucous, creating surface tension. It’s not uncommon to find one plastered against a window pane (allowing for an interesting view of their nether-regions). Both species prefer a diet of small insects, spiders, and snails. Both hibernate under leaves, bark, or rocks. Well, “hibernate” sounds a lot more cozy than the reality… which is that their bodies pretty much freeze and their lungs, heart, brain, and other organs stop working until they thaw out and reanimate in the spring. It’s a pretty nifty chemical trick, on par with being able to transform your complexion at will. 

Kermit has an unmistakable personal brand, but distinguishing H. versicolor from H. chrysocelis visually is just about impossible. Both Eastern and Cope’s are relatively small (1.5—2.0 in/3.5—5 cm), and the adults are often mistaken for younglings. Both wear a sweep of bright citrus-orange along the inseam of their hind legs (a signature shade is all the rage, you know).  Females of both species are usually (but not always) larger, with a ladylike white throat. During the breeding season, males have a macho (make that hipster, since it resembles a beard) black, gray, or brown throat. Guys sing. Gals swoon, but don’t sing along.

The ranges of these two species overlap, but Cope’s are more widely distributed. If you find a gray treefrog in North Carolina or Georgia, you can be reasonably certain it’s a Cope’s, but if you’re in Iowa or Pennsylvania, all bets are off. The only risk-free way to know for sure is to do a DNA test — Cope’s are a diploid species, meaning they have two sets of chromosomes, one from each parent (for a total of 24); Easterns are a tetraploid species, meaning they have four sets of chromosomes (for a total of 48).

Now, some frog call connoisseurs claim they can detect variations in breeding calls, and that Cope’s treefrogs have a faster and slightly higher-pitched trill than Easterns. But the call rates of both species change with ambient temperature… so color me skeptical.

[Postscript:  What kind of frog is Kermit? While I’ve never found a definitive answer to this question, I always assumed that because he was created/discovered by Jim Henson, he was probably Hyla muppetalis or Rana hensonii… something like that. However, in 2015 Brian Kubicki of the Costa Rican Amphibian Research Center discovered a frog who, if not the same species, must at least be a first cousin, or possibly Kermit’s doppleganger.]

Diane’s bare-hearted glass frog (Hyalinobatrachium dianae). Photo: © Brian Kubicki, Costa Rican Amphibian Research Center, Used with Permission

[Thanks to the photographers who granted permission to use their photos, and to those who made their work available through the Creative Commons license: Dave Huth(composite of color variations), , Chiswick Chap & CheChe, (melanophores schematic), Alan Wolf, Andrew Hoffman, and Douglas Mills© 2017 Next-Door Nature. Reprints welcomed with written permission from the author.]

Spotted!

A spotted towhee caught on a fast-food run, and not particularly happy about it.

Supermarket tabloids love just-like-us features so they pay paparazzi top dollar to catch somebodies acting like nobodies. Today I’m focused on the Towhees. They like to keep a low profile but I’m a pro and I know how to find them.

First Rule of Papping: Ya can’t tell the players without a scorecard! It also helps to know the aliases they use to create confusion and avoid detection. See, for a long time all the Towhee’s identified as Team Pipilo. Several years ago, however, about half of them left (were removed, actually) to form Team Melozone. Maybe the rift was media-created (fake news, so sad), or maybe the less flamboyant Towhees felt overshadowed by their more colorful and fashion-forward cousins… who knows? Towheestas, as their fandom are known, love to argue over the distinctions between and relative merits of the two tribes, as well as who should be a P and who definitely qualifies as an M.

Currently,  Team P include the Collareds (P. ocai),  the Green-taileds (P. chlorurus), the Easterns (P. erythrophthalmus), and the Spotteds (P. maculatus), but not so long ago both the Easterns and Spotteds were using the tag Rufous-sided (the Easterns got full custody of P. erythrophthalmus). Spotteds are also referred to in some circles as The Avians Formerly Known as Oregon or Socorro.

Similarly, and to keep things even-steven, Team M also has four members: the Aberts’ (M. aberti), the White-throateds (M. leucotis), the Canyons (M. fusca), and the Californias (M. Crissalis). Oh, but the Canyons and the Californias used to be one big happy tribe, the Browns, even though the Aberts’ and the Californias are probably closer relatives.

Got it all straight? Yeah, it’s a complicated family tree — that’s show biz. Try keeping track of the rest of the Sparrows, not to mention the Barrymores, the Fondas, and the Coppolas.

Second Rule of Papping:  Zoom in on the habitat. Finding out where your luminary lives is a crucial datapoint.  Some Towhees prefer to be on the right side of the continent (Easterns), some are Westerners (Californias, Green-taileds, and Spotteds), and there’s some who meet in the middle. Others Towhees prefer the Southwest (Canyons and Aberts’), or even south of the border in Mexico (Collareds & White-throateds).

Towhees do household chores, just like us!

When it comes to choosing a home base, the Easterns and Spotteds will always opt for a ground-floor unit, if available, ideally tucked in next to a log or of clump of grass to provide some privacy, but they’ll tolerate the higher perches (shrubs) preferred by the Californias, Canyons, and Green-taileds. The Aberts’ are the only Towhees who like to live in a tree-top high-rise. Not much is know about where the Collareds and White-throateds homestead because they’re a secretive bunch who’ve put down roots far from the limelight’s glare, in the more rural setting of Mexico’s mid-to-high altitude subtropical and tropical pine-oak forests. They’re a rare and lucrative shot but too remote for run-and-gun photography.

A Spotted spotted at the spa.

Improve your chances by becoming a regular at all of the places your subjects like to eat, including the local hipster farmers markets and upscale grocers, where they shop for household supplies, as well as favorite watering holes and spas. If you can get a neighborhood exposure you’re golden because that’s where life gets real. As the playground K-I-S-S-I-N-G song tells it, first comes love, then comes marriage, then comes baby in a $700 Bugaboo carriage. Actually, these days marriage is an option, not a certainty. Regardless of the parents’ living arrangements and legal status, or lack thereof, nest/crib beta is pivotal for a paparazzo because editors drool when there are kids in the picture — Mommy & Me outings are always Money Shots.

A California towhee takes her mini-me out for lunch.

Third Rule of Papping:  Know your subject inside as well as out. In other words, not just their look but the idiosyncratic behaviors that will tip you off to their presence, even when they’re not wearing breeding plumage. For example, you’ll want to know that all the Towhees like to forage for food using a unique two-footed backward hop, followed by a pert bend-and-snap. Well, I assume this includes those camera-shy Collared and White-throateds but who the hell knows. If the pickin’ are slim, or maybe too predictable, Spotteds will scan the shrubbery for snacks, and the Aberts’ have been known to poke around under the bark near the bottom of tree trunks for some grub.

Family comes first for the Canyons and Green-taileds, who have a reputation for forming long-term, monogamous pair-bonds. If a Green-tailed mom senses danger, she’ll bravely flee from home on foot with a conspicuously raised tail to attract and distract the predator’s attention from her children.

A California fascinated with its reflection in a window.

It will probably come as no surprise, that the Cali Crew has an ongoing love/hate relationship with their image — you’ll see them in front of a freshly washed window, handy car mirror, or any other reflective surface checking out their visuals or talking to themselves in a very critical, territorial tone. They’re not crazy, just a little left of center. They like to chill in stands of poison oak, feeling all cutting edge because this hangout hasn’t been “discovered” yet, gobbling up the pale berries as if they were caviar.

Last, but not least… shut up and get the shot. Sure, the relationship between some celebrities and the paparazzi is symbiotic— they get publicity, you get residuals. Towhees don’t play that. If you want to be successful with this dynasty you’ll stay quiet, blend into the scenery, keep your eyes open, and your finger on the trigger. Be the early bird that catches the worm. Not that Towhees are worms. Far from it. Truth is, they’ll eat that worm for breakfast… and you could get it all on film (or a memory card).

[Thanks to the following photographers for making their work available through the Creative Commons license: Dawn BeattieCalypso Orchid, TJ GehlingDoug Greenberg, Scott Heron, Lucina M, Mike’s Birds, Jorge Montejo, JN Stuart, Ingrid TaylarUSDA, Francesco Veronesi, and Yutaka Seki.  © 2017 Next-Door Nature. Reprints welcomed with written permission from the author.]

Summer Soundtrack

The eastern gray treefrog is one of many performers in nightly summer concerts.

The eastern gray treefrog is one of many performers at nightly summer concerts.

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One of my favorite things about summer is the free outdoor concerts. I’m not talking about local bands that occasionally perform from the park gazebo even though they can be a pleasant accompaniment to my evening dog walk. No, nothing says summer like the insect-amphibian jam sessions that take place almost every evening.
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I’ve moved quite a lot in my life and have been delighted to learn that each place I’ve lived long enough to grow accustomed to—six U.S. states and a Scandinavian country—has a timbre and cadence all its own, distinctive to that specific habitat in a certain continent on a singular planet in an expanding universe. It’s the soundtrack of home, wherever home may be at that particular time in field cricket 2 by Jimmy Smith, CCLone’s life.
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The musicians start warming up as the light begins to fade. They’ve been playing the same basic tune since I was a child so I immediately recognize the overture. By 7:00-7:30p the instruments are tuned and ready to swing.
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Field crickets (Gryllus spp.) establish the beat with their forewings, kind of like a finger-snap that varies from cool to hot depending on the atmosphere.
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Common true katydids (Pterophylla camellifolia) shift the accent…
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common meadow katydid by Rachid H, CCL… and the common meadow katydids (Orchelimum vulgare, not as common as the name implies) chime in with a bit of lawn-sprinkler syncopation.

 [you might need to boost the volume a bit on this one]

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Before long, the dog-day cicadas (Tibicen canicularis) are stealing the show.
dog-day cicada by Roger Engberg, CCL
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As the evening progresses, though, the cicadas and other insects cede the stage to the second act—the frogs and toads… possibly because these headliners have been known to devour the opening act!
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The band is made up primarily of horns and percussion. This isn’t jazz—there’s not much in the way of improvisation and the musicians don’t really take turns letting one another shine during a solo. It can be difficult to identify the featured players, in part because the cast keeps changing; there are fair-weather performers, some northern cricket frog by Andy Reago and Chrissy McClarren, CCLhave stormy temperament, and others don’t like to travel far from their favorite watering hole. Still, there are some easily recognized voices.
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Northern cricket frogs (Acris crepitant) step in to set the pace abandoned by their namesake insect. I’ve seen their call described as pebbles bouncing against one another but to me it’s a metal cabana—chain wrapped around a wood cylinder and shaken, not stirred.
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The American toad (Anaxyrus americanus) is a minimalist; not much complexity but the sustain on that single trilling note is impressive.
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green frog by Matt Reinbold, CCLThe green frog (Lithobates clamitans), on the other hand, is a true traditionalist—no electric bass for this fellow, or even an upright acoustic. Listen carefully and you’ll hear his homage to a single string and washtub.
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Tiny boreal chorus frogs (Pseudacris maculata) play plastic comb call-and-response…
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eastern gray treefrog by USFWSmidwest, CCL… and the gray treefrogs (Hyla versicolor) are in charge of the upper register. These little guys can blow, plus how about that vibrato!
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When the gang’s all here and lettin’ it rip the result is more cacophony than symphony—not everyone’s ideal night music but a lullaby to my ears.
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© 2015 Next-Door Nature—no reprints without written permission from the author (I’d love for you to share my work  but please ask). Thanks to these photographers for making their work available through a Creative Commons license (CCL) or Project Guttenberg License (PGL) (from top to bottom):  USFWSmidwest (eastern gray treefrog); Jimmy Smith (field cricket); Lisa Brown (common true katydid); Rachid H (common meadow katydid); Roger Engberg (dog-day cicada); Andy Reago & Chrissy McClarren (northern cricket frog); AllieKF (American toad); Matt Reinbold (green frog); J. N. Stuart (boreal chorus frog); USFWSmidwest (eastern gray treefrog). 

Damsels and dragons… but no prince

damsel fly at rest, Next-Door Nature, urban wildlife

This lanky damsel isn’t waiting for a charming champion to rescue her (or him?). It’s just resting up for another mosquito-shopping trip (Photo: Tomquah, Creative Commons license).

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Once upon a time there was a damsel(fly).

[Imagine, if you will, a bucolic Disneyesque soundtrack of flutes and piccolos in the background.]

She (Or maybe he. This is a modern fairly tale.) explored the lovely little pond from which s/he had recently emerged after having spent most of life underwater as a nymph.

Who would have guessed during that awkward adolescence, when growth spurts had him/her literally jumping out of her skin a dozen times or so, that she would transform from an ugly duckling into a swan? (Speaking of awkward… let’s just stick with “her” from here on out for the sake of simplicity, shall we?)

So… today was her debut. A coming out, of sorts, and the damsel(fly) flitted here and there, enjoying the warm sun shimmering and gleaming on her iridescent wings as she dipped down to the water now and again to daintily snack on mosquito larvae.

Not a care in the world.  Completely oblivious to…  [Cue the ominous bassoon music] …the looming presence of a dragon(fly) on the other shore.

Not that it mattered, really. [Can I have the flutes and piccolos back, please?]  Sure, the dragon(fly) was part of the Epiprocta clan, the damsel(fly) a Zygoptera, but they were both members of the Order Odonata. No family feuds that she knew of, and so closely related were they that many folks had trouble telling one from the other without assistance in the form of a handy reference table.

They were cousins, but not kissing cousins. No interspecies hanky-panky here, even though their kind were known as having an unusual approach to romance. You see, instead of offering a wake-up kiss, the male clasps the female behind her head with a special appendage on the tip of his abdomen. IF she welcomes the embrace, instead of sliding her foot into a size 6 glass Louboutin slipper eventually she loops her abdomen forward to pick up the spermatophore from a structure on his abdomen and deliver it to her spermatheca [Latin is a romance language, remember].

I know, I know… it sounds kind of weird and kinky but trust me, it’s just hard to describe. When it’s right it’s a beautiful thing, especially when the couple forms a kind of heart with their entwined bodies [Everyone say “awwwww”].

Sometimes they even become members of the Mile-High Club, flying united for a little while. But damsel(flies) and dragon(flies) aren’t the marrying kind. They’re independent and self-sufficient—a characteristic that begins in infancy. Good thing, too, because, to be perfectly honest, the adults are neglectful parents. Dad is no prince, zooming off with hardly a backward glance at the new Mom-to-be, who’s no queen of the nursery herself. She deposits her eggs in floating plants or directly into the water and then washes her (metaphorical) hands of the responsibilities of child-rearing.

The nymphs (aka naiads) hatch and, being carnivorous little monsters, begin feeding on mosquito larvae, daphnia, tadpoles, small fish, and sometimes each other.

That happens among adults as well, although the jury’s still out on the subject of postcoital cannibalism, a not-uncommon behavior in the insect world. It’s enough to give a girl pause (although, for most insect species it’s the guy who needs to worry about fatal attractions).

Whatever. This is the 21st century and females of every stripe and species are all about DIY.  Gals today don’t need a prince to save them. Locked up in a tower? Any modern, self-respecting damsel knows you simply pull out your smartphone, Google instructions for making a rope out of sheets, and then shimmy down to freedom.

Evil stepmother? Please. Dial the Child Abuse Hotline and tell that witch you’ll see her in court!

Face to face with a dragon? Reach for your trusty catch-pole or tranquilizer dart gun apps.

And live happily ever after.

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© 2012 Next-Door Nature—no reprints without written permission from the author (I’d love for you to share my work; all you have to do is ask). Thanks to these photographers for making their work available through a Creative Commons license: [starting from the top]: Tomquah (cover damselfly); Photo munki (nymph… not the same species); Clifton Beard (mating damselflies); Ben McLeod (dragonfly eyes); and Charles Lam (damselfly eyes).

Social network

next-door nature, urban wildlife, wasps, yellowjackets

Love Facebook? You might want to thank a paper wasp (Photo: roadsidepictures, Creative Commons license)

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Mark Zuckerberg would not be one of 100 wealthiest and most influential people in the world without the help of wasps. I mean the six-legged kind (whether or not two-legged WASPs should get any of the credit is something for attorneys to discuss and will not be addressed here).

It’s a lengthy timeline but easy enough to follow*:

wasps to Facebook timeline

There you have it—no social insects, no social primates and, therefore, no need for a social network. When you think about it, Facebook isn’t just an online community. It’s a kind of virtual hive. You and Mark owe more to wasps that you may have ever realized.

next-door nature, wasps, mud dauberNot all wasps are gregarious, mind you. The majority of species, including mud daubers (Sphecidae), pollen wasps (Masarinae) and potter wasps (Eumeninae) are solitary. You know the type… quiet, poorly developed interpersonal skills, keep to themselves, rarely cause much trouble. A lot of them don’t even have stingers and they take the term “wasp-waisted” to extremes. We’ll respect their privacy, at least for now, and come back for a visit some other day.

Meanwhile, here in the U.S. we have two basic types of social wasps: paper wasps (Polistes spp.) and yellowjackets (Vespula spp. and Dolichovespula spp.). The two groups are often lumped together under the “hornet” tag, but the introduced European hornet (Vespa crabro) is the only true member of that Family found in North America.

With a few exceptions, wasps have two pairs of wings and can be distinguished from bees by that narrow waist (aka petiole) between the thorax and abdomen. The ovipositor (an organ used to prepare and position eggs) of a fertile queen becomes the stinger of an infertile worker females; males are not capable of stinging. Unlike honey bees (Apis spp.), wasps do not leave their stinger behind and are able to deliver multiple injections of venom.

Adult wasps feed on nectar and, as a result, can be classified as pollinators. Some social wasps are omnivorous, feeding on fallen fruit as well as carrion; yellowjackets are especially attracted to open garbage cans and dumpsters, drawn perhaps to the sweet, sticky spillage from nearly empty soda cans and bottles as well as other types of decaying leftovers.

next-door nature, wasp, yellowjacket

yellowjacket (Vespula germanica)

Wasps come in a rainbow of colors, including vivid yellows, metallic blues, and bright reds (keep this helpful rule of thumb in mind when interacting with insects—flamboyant wardrobes usually serve as a “don’t touch!” warning, backed up with some kind of poison or venom). Because they often share a brown or black and yellow color scheme, paper wasps are often misidentified as yellowjackets. I don’t want to encourage you to get up close and personal to make the identification and, luckily, there’s no need. The easiest way to tell them apart is by their nests.

Paper wasps and yellowjackets will nest in trees, under building eaves, in walls, and just about any other place that offers some protection from the elements. Both types of wasp use chewed wood fibers as the main construction material, even when building underground, as yellowjackets often do.

next-door nature, wasp, paper wasp, wasp nestPaper wasp combs attach with a single filament and consist of one tier of adjacent papery hexagonal brood cells for developing larvae. Each cell is open on one end  so you can actually see the contents, if you choose (but please keep a safe distance. Better yet, just look closely at the opening photo above). Typically, a mature nest contains 20-30 adults and rarely grows to more than 200 cells. Paper wasps usually attack only when they or the nest is threatened, but they are territorial. As an interesting aside, the northern paper wasp (Polistes fuscatus) has extremely variable facial patterns and recent research suggests their facial recognition abilities are similar to those of humans and chimpanzees (Pan spp.). Obviously, individuality affords some benefit, even among drones—so much for faceless anonymity.

Yellowjackets prefer to raise their young in a kind of fortress that looks more like what we would think of as a hive, with layers and layers of brood cell combs. The whole structure is completely enclosed with the exception of a single entrance hole. Queens establish new colonies each spring, often returning to the site of a previous nest (the location is identified by a chemical scent marker recognizable even to a first-year queen). However, if the structure is particularly well-protected from the weather—in the wall of a house, say—it may become a perennial nest, populated year-round. Yellowjacket hives may range in size from several inches (at the beginning of the colony’s history) to enormous structures measuring six feet or more and housing as many as 20,000 adult workers.

Wasp control is dangerous, especially for people who have heart conditions or known allergies to the venom, so it’s important to know what you’re dealing with before you take action. There’s a huge difference between avoiding 20 winged assailants and outrunning 20,000.  Moreover, yellowjackets tend to be more aggressive—they don’t give up the pursuit as quickly. [For more information on how to safely manage wasps, download a fact sheet courtesy Drs. Mike Merchant and Glen Moore of my alma mater, Texas A&M. Whoop!]

Don’t be too quick to declare war on wasps, though. In addition to their important role in plant pollination, nearly every pest insect species has at least one wasp species that preys or parasitizes it, making wasps a critically important natural biocontrol that benefit agricultural and even home gardeners. If that’s not enough to convince you to live and let live with wasps, when possible, image your life without social media!

I’m serious—next time you see some wasps congregating around your front porch, take a moment to say thanks… just before you blast the nest with with the hose, knock it down with a broom handle, and then grind it into the sidewalk with your shoe to be sure there are no survivors (don’t act all innocent with me—I can see that can of Hot Shot® behind your back).

When you’re finished, don’t forget to post about it on Facebook!

 

*NOTE:  As new discoveries are made, scientists continually discuss, argue, and refine our understanding of the evolutionary history of life on Earth.  I realize this timeline is simplistic but it is based on currently available research. My intention was to create a captivating introduction to a post on wasps by illustrating a connection between Zuckerberg, social networks, and the Vespidae Family. If you have a nit to pick about my portrayal of the fossil record and its accuracy—cut me a little slack, okay? I’m a writer and an urban wildlife biologist, not a taxonomist. Plus my beloved MacBook Pro died last week so I’m way behind schedule, stressed out, and in mourning (I did pull myself together long enough to purchased a new MacBook Pro and, I must say, it has been incredibly supportive as I struggle overcome my grief.)

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There’s nothing quite like finding a little Next-Door Nature in your email inbox—click the “subscribe”  link in the upper right-hand corner of this page and receive notifications of new posts!
© 2012 Next-Door Nature—no reprints without written permission from the author (I’d love for you to share my work; all you have to do is ask). Thanks to these photographers for making their work available through a Creative Commons license: [starting from the top] roadsidepictures (paper wasp on nest); Malcolm Tattersall (mud dauber); Richard Bartz (yellowjacket on leaf); Bob Peterson (paper wasp nest in situ); and Jason Hollinger (yellowjacket nest).