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Cnemie-philia

Yes, that’s “Cnemie-philia” — the love of lizards in the genus Cnemidophorus, now more properly called by their current genus name, Aspidoscelis, or Whiptails.  Our locals are Sonoran tiger whiptails (Aspidoscelis tigris punctilinealis), and they’re the most commonly seen lizard in our Phoenix area yard.  They like it hot and are out and about during the the day, except in the highest heat, constantly looking for prey such as insects and ants, which they are welcome to, as our ants have out-sized painful defense methods.  (Yet I love the ants, because they feed the flickers and the whiptails).  The young whiptails have been more in evidence recently, too — tiny whippety slippets of things, sleek and fast with brilliant blue tails that largely void their stripey camouflage against granite gravel.  Maybe the flashy and detachable nearly-neon blue tail is an effective decoy for color-visioned predators, distracting them from more critical body parts.

(Various watercolors in Arches 140 lb coldpress sketchbook, A.Shock; click image to enlarge)

Here’s a watercolor study of a tiger whiptail who, sadly, fell victim to the LaBrea Tarpit of our pool.  I finally took it out of the freezer drawer of our fridge, much to E‘s relief, although there is still a Vaejovis scorpion chilling in there (this is when zip-lock bags really shine, I feel).  When I was through drawing, I took pictures and put the limp, thawed carcass out for a Curve-billed thrasher to find for a meal, but ashes to ashes: the ants found it first, bringing the lizard’s life full circle in a nutritional sense.

Etymology

Lately I’ve been slacking off on supplying etymologies for things, but this one’s already been covered, at the very bottom of the Desert iguana post, along with a swell photo by E of a (Plateau?) tiger whiptail we saw at the Grand Canyon.

Screen-gecko-eat-moth

Working nocturnally in the studio gives observation opportunities not available during the sunny daylight hours.  Geckos (the non-native Euro-variety) march up and down the raccoon-ravaged screens stalking moths larger than their heads.  Here’s a picture of the ventral surface of one with a successful catch, all swallowed but for the wings, the reflection of my red clay-water bucket and camera visible in the clay-spattered glass. (Photo A. Shock)

Unsolicited plug: For those of you into such things, there’s an invaluable new field guide available, Lizards of the American Southwest, a photographic fieldguide, edited by Lawrence Jones and Robert Lovich, published by Rio Nuevo Press just this month.  Authoritative, detailed, lavishly illustrated by good photos; maybe a little big for carrying into the field, but throw it into the car for that road trip to Northern Arizona or New Mexico.  It’s all in here!

Posted by Allison on Aug 14th 2009 | Filed in close in,natural history,reptiles and amphibians,yard list | Comments (1)

Howdy from Sierra Vista, Arizona

Gaze upon Sierra Vista, in south eastern Arizona, where the beautiful Huachuca Mountains beetle over the fast food restaurants and motels of the busy town.  Not visible in this shot, but also beetling, is the everpresent and mysterious white surveillance blimp.  One day, I will find out about the white blimp.  Maybe today.

The natural beauty of the region is not far away; below is a view of the foothills of the Whetstone Mountains just north of Sierra Vista.  The landscape here is transitional between the Sonoran and Chihuahuan deserts, and is high enough to be more grassland and thornscrub than desert.  But this trail in Kartchner Caverns State Park has ocotillo, agave (in bloom) and barrel cactus, and a mix of desert and arid scrubland birds, like Curve-billed thrasher, Greater roadrunner and Varied bunting.  (Not that I’m seeing many birds — inexplicably, I forgot my binox!  I guess I’ll have to be an artist this weekend, and not a birder…)  The landscape is lush and green, even in a moderate monsoon year.  Most of the rainfall of the entire year falls during the summer monsoon season.

Southwest Wings Birding and Nature Festival is in full swing and Three Star Owl is in the thick of things. Yesterday was the first day of the Art Fair and Nature Exposition, and lots of people came for the vendors and artists as well as the birds.  Purchases were made: owls, javelinas, black-headed grosbeaks, and gila monsters found nice new homes.  Peek into the Saguaro Room at the Windemere Hotel, and the first thing you see is the Three Star Owl booth.  (Really, why is it always so hard to get a good booth shot?  In person, the set-up looks quite nice.)  My only sorrow is that the hotel hasn’t turned on the twinkle lights buried in the tulle swagging overhead, left over from somebody’s wedding party.

(All photos A.Shock)

Posted by Allison on Aug 7th 2009 | Filed in art/clay,birding,Events,field trips,increments,natural history,three star owl | Comments Off on Howdy from Sierra Vista, Arizona

Green relief for the hot desert eye

Here’s some eye refreshment for those of us in the hot desert to contemplate: a view of a moist, mossy and cool rainforest from Aotearoa (New Zealand).  Here there be Kiwi birds, and Kakariki, and Mohua.

Native bush at Makarora: temperate rain forest

Native bush at Makarora: temperate rain forest

It always amazes me how effective a bit of shade is for cooling, visually and physically, even in the most searing summer heat.  Our desert trees may not be hundreds of feet high, or hung with mosses and orchids, but on days like today I’m very grateful for our gnarly mesquites, and light-mantled palo verdes, and other arid land stalwarts.

(Photo A.Shock)

Posted by Allison on Aug 4th 2009 | Filed in field trips,natural history | Comments Off on Green relief for the hot desert eye

Lord of the Fly(catchers)

Late each spring, later than most other neotropical migrants, the Brown-crested flycatchers (Myiarchus tyrannulus) return to our neighborhood (and other places in southern Arizona) from their wintering grounds in Mexico.

They are relatively large tyrant flycatchers, about the size of the more familiar Cardinal, but unlike Cardinals they’re not usually seen on or even terribly close to the ground.  They are Birds of Trees, and favor woodland and riparian areas, as well as the occasional suburban or park setting.  They need trees with trunks large enough to contain generously sized holes, because they’re cavity nesters.  A saguaro will do (a “Crest” once checked out a woodpecker hole in our now defunct saguaro, but didn’t select it), or a cottonwood, or any other tree a good-sized woodpecker like a flicker has excavated a hole in already.  We’ve got Gilded flickers and Gila woodpeckers around, so there are holes big enough for the Brown-cresteds to raise a brood in.  Excellently, the BCFL is one of the few native cavity-nesting passerines able to out-compete Starlings for nest-holes.

As flycatchers, they are also Birds of Air, and feed almost entirely on insects which they catch on the wing.  They’re distinctively vocal, and it’s often easier to detect them by sound than by sight, as they give vigorous rolling brrrts and wheeps from the tops of trees.  In addition, they seem to be the earliest singers of the morning, starting before sunrise with a gentle repetitive song that differs in note and pattern from their daytime vocalizations, but is similar in tone.  Many people find it easier to identify them by sound: Brown-crested flycatchers have a look-alike smaller Myiarchus “cousin” the Ash-throated flycatcher, which is more widespread in arid regions of the southwest but utters different sounds.

Though they arrive late in spring, they also leave earlier than most migrants, and around the middle of August, I find myself listening each morning for the early song of the Brown-crested flycatcher, wondering when they’ll all have flown.

(Sketch book watercolor, A.Shock)

Posted by Allison on Jul 23rd 2009 | Filed in art/clay,birds,drawn in,field trips,natural history,yard list | Comments Off on Lord of the Fly(catchers)

Lousy with Costa’s

When the Gophersnake made its appearance, I was about to post on Costa’s hummingbirds, because “informal censusing” (= what we see in the yard) indicates that this is the season when the Costa’s hummer population is highest in our Phoenix area yard: we are lousy with Costa’s right now.

I would guess it has something to do with post-breeding population movement, and the fact that there are a lot of YOY (young of the year) out and about.  Right now, at least three of our back yard nectar feeders are being defended by male Costa’s, one of which is an immature bird, still showing just a few purple spangles at the corners of its throat.

These tiny feisty birds definitely fall into the “dinky desert dude” category.  They spend a lot of time in exciting high-speed tail chases, pursuing each other and other larger hummers like Anna’s away from the nectar sources, even in the impressive heat we’ve been experiencing.  In between, they sip intermittently at nectar sources both natural and human-made, using the energy-rich fluid to fuel their aerial gnatting forays which provide them with protein.

For now, the males seem to have quit their flight displays until next breeding season.  But from their favorite perches — often on twigs under the canopies of open trees like palo verde and mesquite — they engage in quiet “singing” which is a descending sibillance so high and thin that some people can’t hear it.  Even if it’s beyond your pitch range, you can always tell if a Costa’s is singing, because it “assumes the position”: a bit hunched, throat very slightly puffed, head forward and oscillating back and forth gently as the notes are emitted, as if to spray the sound evenly in all directions like audible air freshener, so other hummers in the area can hear it.

The top photo shows the typical neckless, puff-ball silhouette of a Costa’s, short-tailed and gray vested.  In this light, the blazing purple of the “Yosemite Sam” mustachioed gorget is not activated, except for a patch behind the eye.  Even without the bright color, the bird is easily identified by the pattern of dark and light, as in the photo on the left, with the white throat and neck contrasting strongly against the dark moustaches.

(Photos: top, Costa’s in yard creosote, A.Shock; bottom, Costa’s in Boyce Thompson mesquite, E.Shock)

Posted by Allison on Jul 18th 2009 | Filed in birding,birds,close in,natural history,yard list | Comments (1)

A favorite slinky neighbor…

…was patrolling our yard yesterday, an overcast Thursday morning.

I was working in the studio and noticed yard birds scolding harshly.  But my brain was busy with clay, and it only spared enough attention to ID the calls — cactus wren, verdin, curve-billed thrasher — and forgot to be curious about what was setting them off.  If you’re really paying attention, sometimes it’s possible to tell from the calls whether it’s a ground predator or an aerial one — hawk, kestrel — and sometimes even if it’s cat or snake. Snake creates the most fury, or panic, and the longest-lasting, loudest scolding.  But it wasn’t until I noticed E heading outside with his camera that I thought to check out the scene.

In this case, it was the local Gophersnake (Pituophis catenifer affinis, the Sonoran Gophersnake), gliding through the dried leaf litter around the citrus trunks.  Although we can’t be sure, I suspect this is the same individual we see periodically, although it’s much longer than it was the first time we saw it a few years ago, swallowing a very young cottontail practically on our doorstep (E was able to get fabulous pictures of the process from capture through constriction through engulfing, but I’m of two minds about posting them).  Thursday’s snake was close to 5 feet long, and robust, although gophers are not as thick as rattlers.  Gophers are Arizona’s longest snake, and can reach 6 feet in length, so this guy has a way to go yet; I’m hoping he’s finding lots of roof rats to help him get there.  Right now there’s a new batch of rabbits, rock squirrels and quail around, and these along with bird eggs, other snakes and lizards would all be on his menu.

He was moving slowly around the yard, intent on any prey items he might come across, but also moving toward a daytime hiding place, so E was able to get lots of pictures.  At one point, we got a little close for the snake’s comfort, and it gave us its best impression of a defensive rattler: it pulled up into an s-curve, and gaped its pink mouth, hissing and making a mock rattling sound (photo above).

This picture also shows the amazing coloration of the gopher snake: a series of mottled chocolate brown patches and spots on a creme-colored ground, grading into a bold dark brown and yellow striped tail.  This rattler imitation is both a blessing and a curse for the snake.  No doubt it discourages many potential threats like coyotes, but it also causes people to mistake them for actual rattlers, with unfortunate results for the innocent and effective rodent-hunter.  The display was impressive; we gave him a little space, and he quickly resumed his slow perusal of the yard.  Eventually it took cover under a big quartz boulder by a fence, and that was that, until the next time.

For more info, click here to link to the useful Reptiles and Amphibians of Arizona website.

(Photos, E. Shock)

Posted by Allison on Jul 17th 2009 | Filed in birds,close in,natural history,reptiles and amphibians,yard list | Comments (2)

Have a Javelina, or two

Days are getting short until Three Star Owl‘s third appearance at Southwest Wings Birding and Nature Festival, and I’m in a groove, making pieces for the event.  As posted, I’ve been making mugs, and also owls.  Lots of owls.  Even more owls than usual.

So recently I turned to the hairy side of Sonoran fauna, and have been doing Javelinas.  Javelina items are popular with Three Star Owl clients, both Arizonans and visitors to the desert.  Interestingly, it’s often people who have lived their lives in the less urban areas of AZ who are NOT fans of the rooting, tusk-bearing mammal: they may have grown up thinking of them as pesky neighbors, and are weary of battling them over landscaping, gardens, and garbage, or are tired of sewing up the hound.

But in general, javelinas have lots of fans.  I was thrilled when a herd temporarily moved into our neighborhood a few years ago. They were flooded out of their usual habitat during a rainy year when the Salt River swamped the Goodding’s willow woods growing up in its channelized banks.  They did a bit of damage in yards, including ours, but I also still remember the thrill of hearing clicking sounds coming up the street, and looking up to see a mama with two quite young piglets following her!

Javelinas are not true pigs: they are pig-like mammals in the peccary family, Tayassuidae, and have a New World origin as opposed to pigs and swine, family Suidae, which originated in the Old World.  Our javelinas are also called Collared Peccaries, and live in a wide geographical range and a variety of habitats in the arid Southwestern U.S.  There are three other species of peccary in the Americas, which live throughout Central and South America: White-lipped, Chacoan, and Giant Peccaries.

Three Star Owl will be offering Javelina candle-holders and salt and pepper shakers for your table.  Here’s a colored pencil drawing of a pair of shakers in progress.  It’s not the drawing that’s “unfinished” it’s the clay objects, which are in two stages of completion, still in wet clay.  One is modeled and textured, the other not yet detailed or textured.  The shaker holes are the nostrils at the end of their snouts, and each one is re-fillable through neat rubber plugs in their bellies.

And here is a larger candle-holder, completed. The salt and peppers will have the same coloration, matte slips and oxides, with a little sparkle in the eye.

(Photos: top, javelina dirt-napping at the Arizona Sonora Desert Museum, E.Shock; javelina in our front garden, munching spring wildflowers, A.Shock; colored pencil sketch on recycled, speckled paper, A.Shock; Three Star Owl javelina candle holder, A.Shock)

Posted by Allison on Jul 15th 2009 | Filed in art/clay,drawn in,Events,increments,natural history,three star owl,yard list | Comments Off on Have a Javelina, or two

Further adventures with the Hairhen

Early Monday morning I nearly stepped on a raccoon kit.  We both came around a wall at the same time, from opposite directions.  Fortunately, no contact was made: the kits are well-grown now.  Also, the Hairhen is very watchful, so we were all very careful to not create an incident.  She and all four kits were headed back to the Fan Palm where the family holes up invisibly in the spiny fronds during the day, after a night marauding.

It was the second raccoon Close Encounter in as many days — the night before last, the Hairhen spied an ENORMOUS fat Palo Verde Beetle above a window in the studio.  She attempted to climb the aging nylon screen to fetch it down, but the UV-weakened fibers couldn’t support her weight, and she slid back down, shredding the screen on the way.  I was on the other side of the window at the time, just a foot away (the glass was closed) unable to do anything but watch strong-nailed raccoon hands wreak destruction.

I wish she’d managed to snatch the high fiber protein snack — these giant beetles are very destructive, laying their eggs in the roots of Palo Verde trees, where their grubs (which are way too large to be appealing in even the slightest way) eat their way to maturity, doing considerable damage.  (See excellent photos and read more about Palo Verde Borer Beetles here at the fine Myrmecos Blog.)

Above is a photo of our yard Hairhen and two kits in the Palo Verde/Aleppo Pine complex. (Photo A. Shock)

Posted by Allison on Jul 14th 2009 | Filed in Invertebrata,natural history,nidification,yard list | Comments Off on Further adventures with the Hairhen

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