Meet Miss Thang.  She is a female Costa’s hummingbird (Calypte costae), and unlike her purple-mustachioed male counterpart, she’s a plain green-gray above, and a plain gray-white below, with a chunky round body, almost no tail, and no neck at all.  She holds territory right outside our front door, as Queen of the Desert Garden.  The garden has many attributes valuable to a hummer: twiggy mesquites for roosting, a many-pointed DeSmet agave for perching, chuparosas with long-season blooms to feed upon, a freebie sugar-water feeder under the porch, and best of all, prime position from which to attract a showy male Costa’s who does looping, zizzing display flights for her each morning.  Although Miss Thang’s appearance is subdued, her personality isn’t.  She holds this valuable, resource-rich territory against all comers, including resident male Anna’s who are both brash and bigger, the summer tourists like Black-chinned hummingbirds, and any other hummers who may try to kype a slurp from the feeder.  The Gila woodpeckers are too big to chase off, and the Verdins seem to come and go with impunity, but other hummers at the feeder are given short shrift.  Speedy tail chases through the mesquite are frequent, although peevish scolding from a perch sometimes inches above the ground are often sufficient to rout invaders.  Her favorite perch from which to keep an eye on her real estate is a devil’s claw and obsidian wind chime, situated under the porch overhang directly outside the front door, shaded in the mid-day warmth, and dry in the rain.  At this time of year, when the door is open most of the day, we can see her perched alertly on the point of the devil’s claw for hours, spinning slowly as the chime turns in the breeze, chattering indignantly when another hummer flies through, or sallying forth to escort strangers right out of the yard.

Costa’s are desert hummingbirds.  They range from southern California, across the low deserts of Arizona, into Mexico.  The sources I’ve checked supply varying info about the yearly movements of Costa’s, giving an impression of the need for more research.  Some experts report they winter just south of our border with Mexico, others say the birds stay year-round in the low desert, some that they winter in the ‘burbs and breed in the less developed areas of the deserts; others just assert that their distribution is not well known.  In our yard in some years, Costa’s seem to be present in each month, with the largest number of individuals observed between June and December.  Some years they seem to disappear around the New Year and are scarce until late spring.  Now that we’ve packed the yard with hummer-friendly flowers (the photo above is Miss Thang’s demesne in full spring bloom) like chuparosa (Justicia californica), Mexican honeysuckle, (Justicia spicigera), Fairy dusters (Calliandra spp.), Desert lavender (Hyptis emoryi), native penstemons, various aloes, and sugar-water feeders, we seem to see more birds more of the year.

There’s been a female Costa’s hummer holding our front-garden territory year-round for at least two years.  We have no way of knowing for sure that it’s always Miss Thang, but of course it’s possible — it even seems likely.  We suspect she nests nearby — I’ve seen her gathering spider-webs in her beak — but have never discovered a nest. (Each year we do see young-of-the-year Costa’s in the yard, but we don’t know where they hatched.)

The yard also hosts glorious males, staking out other food-plant and feeder-related territories.  In past years, a Little-leaf Palo Verde was favored by a bird we called “Cornerhead” because his gorget went from scraggly sideburns to full-blown Yosemite Sam whiskers over the summer into fall. This is his picture on the right.  This year, there’s a long-mustached male (it may be Miss Thang’s suitor) under the pine/palo verde complex shading an outdoor table.  He “sings” (an almost inaudibly high-pitched descending sibilance) and gnats under the branches, keeping interlopers off the feeder there, then withdraws to the thorny interior of a nearby lemon in the middle of the day.  He “sings” from there, too, invisibly in the deep shade which is the only reason we know he’s in there.

Etymology…

…of the scientific name of Costa’s hummingbird, Calypte costae, is less than satisfying.  On the genus, Calypte, Choate, in the Dictionary of American Bird Names, can’t do any better than “Greek, a proper name of unknown significance”.  If he were alive, Gould could probably give a better explanation as to why he chose this genus for the bold Anna’s and Costa’s hummers.  I would suggest that Gould had in mind the adjective καλυπτή, from the verb καλύπτειν, to cover (with a thing).  The adjective means “enfolding”, connoting a veiled or mantled quality, possibly referring to the gorget that covers the entire crown and throat of hummers in this genus.  As for the species, costae, that was given in honor of Louis Marie Pantaleon Costa, Marquis de Beau-Regard, which early 19th century French nobleman had an “imposing” collection of deceased hummingbird specimens.  Merde, alors.

Photos: All photos by A. Shock, Three Star Owl.  The odd quality of the first photo of Miss Thang is due to the image being shot through an old-fashioned heavy metal security screen.

Here is an image of a Costa’s hummingbird mug from Three Star Owl.  The interior is a beautiful rich mulberry, the glaze color I can manage closest to the color of a male Costa’s gorget.

The Stacked Toad Effigy Vessel is being built from the bottom up, with a brown, groggy, stoneware clay. The working composition is in my head, informed by pictures of desert toads on the work bench, and adapted as it goes. A small maquette modeled last week is nearby for reference, although the maquette has species other than toads in it as well. The Toad Stack is on the scale of a teapot, so in addition to being a Toad Effigy, it could be considered a Teapot Effigy as well: a vessel in the shape of a teapot, if your concept of teapot is broad. Perhaps it will be a Stacked Toad Teapot Effigy.

The Base Toad was modeled solid, allowed to set up to a manageable firmness, then hollowed out and slightly expanded in size by pinching. When firm enough, each limb was cut off one at a time, and a tool was inserted up the center to create a tunnel, then the limb was scored and slipped back into place. The smaller toadly elements are pinched informally into toadly shapes. Each new toad is added when the clay has “set up” — when it’s stiff enough to hold its shape, but still pliable enough to conform to the surface it rests on, and also support the next element. TOES are beginning to appear (Potential Toe Count: 72; Actual Toe Count: 19 so far; current Biological Digit Deficit, 73.5%). Because the interior is hollow, there are a couple of small invisibly placed outlets for air to escape. This speeds drying and will allow the piece to be fired without exploding as the heating internal air expands. When all toadly elements have been added, the surface will be textured in a toadly manner: bumps, bugs, and paratoid glands.

Useful tools: teaspoon and loop tool for hollowing; palette knife and small knife; Tiranti hardwood sculptural tools knobbed at one end and pointed at the other for smoothing internal seams and detailing; toothed metal rib; smooth plastic rib; cheap blow dryer for force-drying clay; wooden paddle made by L.

Our autumnal weather has slowed drying time, so there are lots of gaps in toadly modelling activity while waiting for wet clay to set up. These times are spent in making the next toads, working on other pieces, or going out for excellent sushi at Dozo. In order to prevent the Stack of Toads from settling under its own weight, it will stay loosely wrapped in plastic until tomorrow, with a smooth river cobble wedged under its left front limbpit to help support it until work can resume. What will the Toad Total be?

Increments so far:

How many toes a toad has: useful information put to use almost immediately: here’s a Stacked Toad Effigy Vessel just underway. Potential Toe count so far: 36 toes. Actual toe count: 0 (they’ll be added later). Watch here for progress reports. More toads-toes coming soon…

…with a guest appearance by Charles Darwin

Marine iguana hands, Galápagos Islands. Photo E. Shock.

Pentadactyly, from Greek πέντε “five” plus δάκτυλος “finger”, is the condition of having five digits on each limb.

I make a lot of TOES. Gila monster toes. Crane toes. Jaguar toes. Hummingbird toes, owl toes, and roadrunner toes. Toad toes. A lot of TOES.

For the last week, I’ve been detailing Horned Lizard effigy bowls. This involves rendering a lot of small features like scales, horns, cloacal slits, pineal glands, and TOES. So it takes a long time, and that length of time is repeated for each horned lizard bowl, leaving plenty of opportunity for wistful thought about such subjects as, how can I finesse five toes on each tiny, fragile, rapidly hardening clay foot, and would anyone notice if there were only four?

“What could be more curious than that the hand of man formed for grasping, that of a mole, for digging, the leg of a horse, the paddle of a porpoise and the wing of a bat, should all be constructed on the same pattern and should include similar bones and in the same relative positions?” –Charles Darwin, On the Origin of Species

Okay, so Charles Darwin would notice. Darwin suggested pentadactyly was strong evidence in support of evolution. So, five digits is significant. A horned lizard has five digits on each limb, just like us, and just like many other animals, whether they are lizards, bats, or whales. With some exasperation, I realized I had no idea why this was — why five?

Needing a break from TOES, I headed to the computer: this is what the Internet is for. A quick search on the web produced the slick answer that we all have five digits because the ancestor of all tetrapods (four-limbed organisms) had five digits, and any modern organism that doesn’t (snakes, horses, most birds, etc) has lost digits through evolution. Well, alright so far as it goes — although it’s more of a description than an explanation — but why didn’t the ancestral tetrapod have 8 digits, or 4, or some other number?

It turns out they did: 8, and 6 and 7, among others. In the last few decades, paleontologists have found some fascinating tetrapod ancestors with a variety of phalangic arrangement probably related to the shift from fins to feet, at least partially connected with the shift from aquatic life to life on solid land. Does all this sound inconclusive? That’s because the significance of “Why Five?” is still being manhandled, pinched and slapped around with the discovery of each new ancient tetrapod, mostly in the North Atlantic land areas like Greenland and Scandinavia, which used to be swampy and warm, prime habitat for critters who wallowed in and out of muddy shallows on iffy substraits. Think Muddy Mudskipper, but Big, and with weird feet. Lots has been written about this, if you crave more detail than can be supplied here, check out an older but seminal essay by Stephen Jay Gould, “Eight (or Fewer) Little Piggies” and Jenny Clack’s website. She’s a professor at Cambridge University in the UK, and seems to be the reigning Queen of Early Tetrapod Research Especially As It Relates to Limb Development. (The image above of Acanthostega is from her site.)

Which brings me back to toad TOES (regular toad, not horned “toad”). As sometimes happens while riffling though the internet, I didn’t find an exact answer to my original question. But a lot of useful info accrued along the way. Like, now I know something I’d had a hard time finding out from pictorial sources, and forgot to count on the Couch’s spadefootlets: how many toes does a toad sport on its front feet? The answer is four (five on the back feet, the opposite of cats), and the next time I make a toad, I’ll have the right number. And be thankful, because it could have been eight.

Birds weren’t the only wonderful things to be seen on a recent trip to the Mexican state of Veracruz: there was clay! The capital city of Xalapa, perched on the volcanic shoulders of the Sierra Madre Oriental, has a world-class archaeological museum, Museo de Antropología de Xalapa (MAX), stuffed full of the cultural treasures of pre-Hispanic people local to the region. For someone who works in clay, these objects are endlessly fascinating and inspirational. Here are some of my favorites. Click on any image to see a larger version. Forgive blurriness; no flash allowed, so all camera work is hand-held in low light conditions, through the glass of display cases.

Surprising to me: nearly life-sized human figures in clay. I’d seen examples in stone (like the big Olmec heads, several of which are on display at MAX), or in bas-relief, but not in clay and modeled in the round. On the right, check out Xipe Totec “the Flayed One”, scary deity of death/rebirth wearing the skin of a human, flaking off him as it decays — a practice shown in Aztec sculpture actually carried out by priests, wearing the skins of sacrificed captives. This sculpture was made in 3 pieces: head, torso/arms, and pelvis/legs, and assembled after firing, saving on kiln space. Looks like ear bobs and head-piece may have been interchangeable, or made of another material that didn’t survive; musical instrument or other item held in hands missing?

Effigy vessels — pots made in the form of animals, human heads or figures, parts of humans (like feet), or plants — are common in many cultures in both the old and new worlds, but are particularly prevalent in Meso-America, and there are many fine examples in the MAX collection. Here is one with a bat, and an excellent Jaguar, complete with furry pelt, made by attaching small flattened balls of clay to the surface in exactly the same way as the flaking skin is represented on Xipe Totec. Note the bat’s “arms” are human arms supporting its wings. More on effigy vessels and Three Star Owl in a later post.

Last night was a busy night in the yard. Well, I suppose they’re all busy nights, but last night I was awake to appreciate it. Before human bedtime, the geckos were at their posts under the porch lights (our yard residents are the non-native Mediterranean Geckos, not the indigenous Western Banded, but they’re still charmingly rubbery voracious devourers of insects, especially moths), and the Butte was going off sporadically, the coyote pack’s yelps ricocheting off the slickrock. There might have been the sharp yip of a Gray Fox, which also inhabit the neighborhood, but it was faint. Somewhere, the spadefootlets must have been hopping around foraging in the dark, as well.

After “bedtime” though, things really got going. A female raccoon marauded past the bedroom trailed by at least one kit from this year. Last year there were two separate families, one with two, the other with three kits each. That’s a lot of pounds of raccoons living off the yard, plus Papa, too, who has only half of a tail, diminishing his raccoon-gestalt but not his swagger. We’re not sure how many there are this year, because our view of them is most often through the arcadia door, and sightings are limited to who rolls by the framed glass, like watching a dog show on the TV animal channel.

Last night the main event (for me), however, was again being awakened by an owl. Not the Great Horned owl this time, but an owl I’d never heard in our yard: a Western screech owl. They’re not uncommon in the area — I’ve seen them peering out from day-roosts in saguaro cavities at the nearby Desert Botanical Garden — but we’ve never heard or seen them in our little scrap of modified desert. This one called from just after 2 am until the Butte really exploded about half an hour later, when the owl stopped. Its mellow short hoots were emitted in a cluster which descended slightly at the end. It sounded much like the “Morse code call” of its cousin the Whiskered screech owl, but that species doesn’t live in this part of Arizona. The call was soft but regular, and started up again at 4 am, and went on for at least 45 minutes, when I fell back to sleep.

So far, like the generously rainy Monsoon of 2008, this has been a generously owly season in the yard, and this Western screech owl, who may always have been here, or who may be a new neighbor, ushered in fall last night; I’m glad I was awake to hear it. With luck maybe we’ll catch a glimpse of it sometime, hunting pocket mice and crickets under the desert trees. Right now, though, I think I need a nap: the first nap of Autumn!

“The northern autumnal equinox takes place today, Monday, Sept. 22nd, at 15:44 UT (11:44 a.m. EDT) when the sun crosses the celestial equator heading south for the year. Autumn begins in the northern hemisphere, and spring in the southern hemisphere. Happy equinox!” (Spaceweather.com)

***

Update to an earlier post:

Our local Great horned owl has a friend. Last night from about 4 am we listened to two owls duetting and singing antiphonally for about half an hour, the higher hoots of the female alternating with the lower calls of the male. It’s early in the year for coursthip, but my guess is that these are our usual, established owls reinforcing their pair bond.

Last night at 3.00am exactly, I heard the Great horned owl call. Very close, somewhere right in the back yard. The windows were open because a light monsoon event had brought fresh rain-cooled air, so the call, though soft, carried clearly.

Great horned owls are regulars in our area because there are plenty of perches, and plenty for them to eat. A favorite owly destination is a big Aleppo pine in our back yard. At night that tree is stuffed with roosting doves and other perching birds, a veritable Fresh and Easy for owls. Sitting outside at dark with friends, we’ve watched a horned owl glide stealthily into mid-level branches and then listened as panic ensued among the roosting doves as the owl hopped between branches as if it were going aisle to aisle in a grocery store, filling a cart. Finally it burst out of the needles with a meal clutched in its talons. We got a good look at it is it slid past us, sihouetted against the lights of the house. The feather pool under the pine the next morning was evidence that it had enjoyed a bit of mourning dove.

They are not called “Flying tigers” for nothing. Horned owls, like toadlets, will eat anything that moves and fits down the gullet. Rock squirrels, snakes, desert cottontails, other birds (even other owls), insects, and bats — all are fair game. Even small pets may be at risk, if left unsupervised after dark. The first owl I ever saw was at the family dinner table when I was a kid: a thump, a commotion, and we looked up to see the underside of a Great horned owl pressed to the window, wings flapping against the glass. The owl was trying to separate the family cat (a calico named Ringo, to give you an idea how long ago this was) from the window ledge. A grown cat is awfully heavy prey, however, and the owl had to give up after a few seconds. No one was hurt, but the bird went away hungry. (It was a spectacular view of an owl in action, and I’ve wondered if that was THE bird for me, in a formative sense — I was no more than seven). The boldest hunters are often adults with young to feed — a nest full of hungry owlets requires a lot of sustenance. During that time of the year, parent owls sometimes can be seen hunting even during daylight, working a day job to put food on the table. So, hatching and fledging are timed to coincide with the local peak of yearly rodent production, usually spring, but in the desert areas often much earlier.

Our local owls have reproduced, and sometimes I’ve heard the distinctive, raspy oink of a horned owlet begging, installed on the top of a phone pole while its parents search the alleys for rats or young cottontails to stuff into it. (If you enjoy camping, you’ve heard a sound like it: the creak made by the plastic hinge on a cooler lid when it’s raised.) The female makes the same sound during courtship while soliciting her mate for food. In our area, courting owls can be seen and heard duetting on phone poles and rooftops, visible against the fading sunset sky. As they call together or alternately — the male and female have slightly different voices and cadences — they bow and “hoo.” She holds her tail up, soliciting attention from the male, who strikes a courtly pose to “sing,” tail raised and wings down, maximizing himself like an operatic baritone (he’s smaller than her). Here’s an excellent quote, where the author’s voice slides from ornithologist to owl, almost inadvertently:

“Courtship is fairly boisterous and involves bowing, bobbing, posturing, vocalizing, and allopreening. These elaborate activities lead, as one might hope, to copulation.” (from Hans Peeters, Field Guide to Owls of California and the West, my current favorite owl sourcebook. In the same series as the excellent book on Horned lizards, the California Natural History Guides, published by the UC Press)

If it’s still light enough while all this is going on, you can see flashes of white feathers at their throats, the “gular patch”, flashing as each hoot puffs the owl’s throat briefly. It’s a semaphore for them, like the feather tufts on the top of the head: a way of producing meaningful signals to each other: facial expressions without flexible tissue like lips or eyebrows.

As big, powerful generalist predators, Great horned owls can make it almost anywhere. Their range is right across the US and Canada through Central America and into northern South America. They live in urban, rural, and wilderness areas: desert, woodlands, mountains, wetlands, grasslands and cities, so the chances are you have them where you live, too. Keep an eye open, an ear cocked, and the Chihuahua in at night.

Below are Horned owl salt and pepper shakers from Three Star Owl. Each pair is an adult with an owlet in different stages of development ($48/pair).

About horned lizards

Though sometimes called “horny toads” these reptiles are not toads at all but flat, round lizards which inhabit dry open areas of the western US and Mexico. They are especially well-armored with keeled scales, knobs, and yes, horns, making them look like little dragons. But they feel surprisingly soft when you pick one up, not unlike a beaded purse. (The grumpy-looking guy in the photo below is a Greater short-horned lizard E and I found trying to bask on a cloudy day on a ponderosa log on a backpacking trip in the Gila Wilderness of western New Mexico.)

Failing camouflage and flight, their ultimate defense from harassment is to shoot blood from their eyes. This isn’t an old wives’ tale like bats getting snarled in long hair — they really do it. It works pretty well, often startling the lizard’s captor into dropping it.

Horned lizards favor ants, especially of the genus Pogonomyrmex, Harvester ants, which comprise a generous portion of their food intake.

Most horned lizards lay eggs, but species like Short-horned which live at higher altitudes where the breeding season is too short to incubate eggs, give birth to live young — from 5 to 48 at a time!

These amazing animals have a specialized solar receptor under a clear scale on the top of the head. It’s called the pineal gland, and it’s linked directly to the brain. Although its function is not fully understood, it plays a role in the regulation of body temperature. The pineal gland has many features similar to the structure of an eye, though it is not linked to the optic nerve. Look for the small pineal gland on a Three Star Owl horned lizard bowl, indicated subtly on the top of the skull between the eyes.

Herpetologists currently recognize 13 species of Horned lizards, 8 in the US and 5 in Mexico.

My favorite horned lizard resource is the book Introduction to horned lizards of North America, by Wade E. Sherbrooke, UC Press 2003.

Horned lizard bowls from Allison Shock and Three Star Owl

I’m currently making horned lizard bowls representing two species, both native to Arizona and other parts of the Southwest: Short-horned lizards and Regal horned lizards. You can tell them apart by their horn configuration: Regals have an even corona of ten longish horns on the back of their skull, and Short-horns have 6 very short horns divided by a deep notch.

Both eat ants, so I depict Harvester ants in their bellies. The Short-horned is a live-bearer, so some have young lizards shown inside.

These bowls are handmade from stoneware, and fired to cone 5. Each bowl is different, and each scale is done individually by hand, as is the slip-painting in their bellies. There is no glaze on these pieces, but the mineral-pigmented slips are fired in place, and are indelible. Because of the lack of glaze, I don’t recommend them for frequent food use, or storing liquids. Primarily they are meant to be gazed at adoringly. Click here to see a picture of Horned lizard bowls on threestarowl.com.