I spy with my little pine: solar crescent-eye

Since we aren’t equipped to either observe or photograph solar eclipses directly, E and I took to the yard during Sunday evening’s event to seek indirect eclipse images instead.  The classic pinhole method is simple and adequate — poke a small hole in foil or stiff cardboard, and let the sun shine through the hole onto another card, positioned so that a small image of the sun can be seen on the second surface: the bigger the spy-hole, the farther away the second card needs to be.  This works well enough to see with your eyes, but we found the images of the sun were too vague for the clumsy auto-focus mechanisms of digital cameras to gather adequate images.  Also, the scale of the card operation is tiny, and so, although interesting (and positively better than the alternatives of not seeing the eclipse or blinding yourself trying) it’s not hugely thrilling.

(<< multiple solar eclipses cast onto a house wall through the pine tree canopy)

Fortunately, our yard has an enormous pinhole camera growing in it: the Aleppo pine tree.  Its clumped, criss-crossing needles create a fine mesh that, in addition to delightfully sifting raptors out of the wind, also results in a wonderful indirect eclipse-viewing system.  The tree’s foliage-mass essentially acts as a large card with innumerable pinholes in it: the pine shadows — as well as the shadows of any other trees with sufficiently small spaces between leaves — become patches of eclipse crescents projected onto the back wall of the house, the block fence, and even the ground where the surface is smooth enough to retain detail.  The apertures (the spaces between the trees’ foliage) and the focal plane (the wall, etc) are far enough apart so that the solar crescents are fairly large.

Those solar images can be readily and safely observed and photographed with any camera, and although not as spectacular as a directly photographed astronomical image of the sun, these sun-shaped light leaks make up for their lack of solitary crispness with the sight of multitudes of bright crescents spangling whatever lies in the umbra of the trees, even E’s ASU tee shirt: Sun Devils for real! >>

(By the way, trees do this pin-hole sun-image thing all the time, it’s just that the light-leaks are round like the unobstructed sun, so we call it “dappling” and consider it “normal”.)

(Above photos A.Shock)

In the following series of photos (by E.Shock), beginning at the left, you can see the progression of the moon shadow from upper right to lower left across the disc of the sun.  In Phoenix, we experienced more than 80% occlusion.


Posted by Allison on May 21st 2012 | Filed in natural history, oddities, yard list | Comments (0)

Author

Profile Allison does not consider herself a wildlife artist, but an observer who takes notes in clay. More info...

Finding birds in Paris (or Spot the Bird Île de France edition) Part 1

Let’s deal with this straight away: if you’re a birder tuning in to learn where to find birds in Paris, then, despite its clear title “Finding Birds in Paris”, I’m afraid this two-part post will disappoint.  It is not intended to offer technical advice about how many species of mésange you might see in the Bois de Boulogne (I’ve read that it’s seven, by the way, but personally I haven’t seen more than three), or where to find Tawny owls (I’ve heard le Cimitière du Père-Lachaise, but again, personally, I’ve only heard the soulful cries of Jim Morrison mourners there).

<< Nature is everywhere in the city: signs in the neighborhood parks explain this.

So, this isn’t an advice column.  This is because I’m no expert on the subject — I find Paris both easy and difficult to actually bird on one’s own, and the only advice I have is not news: keep your eyes and ears open, seek appropriate species in appropriate habitat (finding the habitat is usually the trick), and don’t expect to find anyone else with binoculars around their neck nearby to answer questions about where to find bullfinches.  Also, bring an umbrella.

Furthermore, there are no hard-to-detect feathery forms hidden in the photos: this post is only a Spot the Bird in the sense that I declare that Birds are easy to Spot in Paris, especially in May.  Some birds are so common they are virtually unavoidable: you’ll soon tune out the constant, frantic twittering of swifts overhead, the clap of feral pigeon wings (above), and the chirping of crumb-seeking sparrows.  Gulls abound on the Seine and soar calling above parks like le Jardin des Plantes which sit on its banks. Plane trees in the same parks host hungry families of great, blue, and long-tailed tits, as well as singing chaffinch. Leafy poplar tops may sport a magpie, une pie bavarde, or two.

>> Great tit, mésange charbonnière, (Parus major) foraging for nesting material on a stone wall in le Jardin des Plantes.  Yes, it’s primarily blue and yellow, a treat for us norte americanos who are used to our chickadees’ mute gray and buff body plumage, with only their jaunty black-and-white headgear to mark their alliance with more colorful old world family members .

Surrounded by pedestrians and traffic, mallard couples paddle in monumental water features like la Fontaine Saint-Michel, unruffled that Duret’s archangel looks like a cuirassed girl compared to the manly serpent-tailed Satan he’s so righteously vanquishing.  And underfoot, geometric, manicured lawns are studded with starlings, carrion crows, and huge lumbering wood-pigeons (left).

Most obvious in all of these urban niches is the ubiquitous merle, or blackbird, which like its close cousin the American robin, hops foraging in the green blades of parks and gardens, and whose melodic phrases ring through the gray-walled rues from rooftop chimney pots and aerials even before sun-up.

>> Blackbird, merle, (Turdus merula).

Unlike their less closely related namesake the American robin, small european Robins, les rouges-gorges, glide up to perch on low branches and garden walls, keeping a buttonlike eye — somehow keen and blank at once — on everything.

<< European robin, rouge-gorge, (Erithacus rubecula).  E shot this at Giverny, but we saw them in town, too.

But look closely — there are less common species, too.  One of those coots in the park pond may be a moorhen (below, right), one of the sparrows on the lawn a dusky Dunnock.  And check the glowering gargoyles overhead, perched in the involved stony heights of Sacre Coeur, Notre Dame, and Saint-Sulpice: one may be a kestrel, looking down like a sharp-winged, keen-eyed angel (or, according to the chittering swifts, a quick taloned little demon).

Less forthcoming are the flashier birds, the specialty species: golden orioles, firecrests, black woodpeckers, and others.  These require more time and more amenable weather than we had to do a proper search.  Next time!

Fortunately, Paris has other birds to find.  In Part 2 of this post are a few of them — stay tuned.

Special note: many thanks to E.Shock, his zoom lens, and his willingness to share his images!  All the photos above are his, except the billing feral pigeons (which my less effective zoom could handle, since the birds were virtually at my feet).

Posted by Allison on May 18th 2012 | Filed in birding, birds, field trips, spot the bird | Comments (2)

A sketchy bird list

Not keen on enacting the Mad Dogs and Englishmen scenario, E and I lounged for a couple of hours during the heat of the day in the shade of a wild palm grove last weekend.

<< Southwest Palm Grove, Tierra Blanca Mountains, Anza-Borrego State Park (photo A.Shock)

This is a well-known oasis, and not terribly remote — but a destination doesn’t have to require too much hiking before you can expect to have the place primarily to yourself, especially if it’s slightly uphill. With only occasional others wandering through, we ate lunch and waited for the heat of the day to subside so we could march back across the desert to our campsite in the low sun.

E doesn’t sit still very well, but he was amenable under the circumstances: just feet from the moist green calm of the grove, the white desert glared through dark trunks, reminding us of the hot, spiny, and hard path home.  He read, and poked around the substantial grove with his camera.  There was plenty to look at: like windmills, palm trees have a quality which readily vacillates between stateliness and creepiness according to wind, light, and the observer’s mood.  At noon on a calm day, these palms seemed merely sleepy and obliging, providing shade and coolth to travelers, both human and animal.  I sat on a rock, choosing this outlier palm to scratch into a small Moleskine sketchbook with an excessively-finepointed pen, fussing over capturing the complicated but orderly rhythm of shadow and light on the pleated, fringed fans, and considering how to show the blackness of the trunk without losing the way the sun picked out its checkered texture. Slatted shadows wheeled around us as the sun rolled across the afternoon sky.

Sitting still is a wonderful way to see birds, especially at a frondy desert oasis with high perches for cawwing ravens and low cover for furtive Lincoln’s sparrows and simultaneously sneaky and showy Common yellowthroats.  Instead of keeping a list in a notebook, I wrote species’ names as they manifested in the palm’s portrait. It was possible to use a cramped scrap of background for this because bird diversity was low — the list was quite short, even with non-avian species like ants and butterflies included, and the few words provided the perfect coarse-textured, mid-range value for the desert beyond the grove.

<< Look closely, this isn’t just a landscape, or a portrait of a stately middle-aged California fan palm (Washingtonia filifera), it’s a bird list (click, twice, to enlarge).

Normally, previous years’ fronds cloak the trunks of Washingtonia palms to the ground, giving them a mammoth-legged look: sturdy, shaggy and brown.  But this grove had burned sometime in the past few decades, leaving the surviving older palms bare-legged and carbony black, smooth and manicured like well-behaved resort palms.  Little palms grew up around them, a decade or two old themselves, and bearing all their previous fans on their trunks naturally, indicating they’d sprouted after the last fire.

>> glowing spines (photo E.Shock)

We timed the return trip well, and eventually hiked back to camp with the low sun behind us.  It back-lit the cholla with a golden haze, and ignited the early Scott’s orioles perched on red ocotillo tips into melodious yellow flames.  But the orioles wouldn’t hold still for a photo, and there was no time for a sketch; darkness falls abruptly in the desert.

Posted by Allison on Mar 31st 2012 | Filed in art/clay, birding, botany, drawn in, field trips, natural history | Comments (5)

The desert between

It exhibits questionable judgment to leave Phoenix right now when the Sonoran desert is so beautiful, but we did.  In a fit of really-needing-to-get-out-of-town E and I enacted a spur of the moment plan for a busman’s holiday of camping in the Colorado desert*.  We took off down I-8 in the footsteps of Juan Bautista deAnza himself, headed towards a bit of California desert between our desert in Phoenix and the desert under the currently snow-capped Peninsular peaks east of San Diego (see photo below, be sure to click to enlarge).

<< our tent above Bow Willow (all photos A.Shock unless noted)

Between.  We arrived at the south end of Anza-Borrego State Park between weekends (it was spring break at ASU, so E was more or less at liberty mid-week).  The weather was a slice of unseasonable summer between winter and spring, topped by a dry blue sky between pacific storms and a tarry, star-salted night sky between moons.  It was a waiting wing of a moment, a pared-down parcel of between, when all that was in the desert was what was always there, the patient bare granite bones, the sun, cactus, creosote, and cool, rustling palms: the permanent residents.  Ephemerals — the summer-breeding birds and annual wildflowers — hadn’t appeared in any numbers, yet.

>> Overlooking the Carrizo Valley and the snow-dusted Tierra Blanca Mtns from the notch at the end of Smuggler’s Canyon

Arriving in any desert for peak wildflower bloom or migration at an oasis is serendipitous: we’ve managed it occasionally, sometimes by accident and sometimes on purpose — once for a songbird jam at Butterbredt Springs in the Mojave and twice for “jubilee” blooms in Death Valley only a few years apart.  These were times we effortlessly tripped over the attractions and high points, unable to look away from showers of jewel-colored orioles and tanagers and thick carpets of bright petals.  This between season was different: we had to look hard and close for things — the serendipity took more effort.

Ocotillo (Fouquieria splendens) being very splendid indeed; this one was about 10 feet tall  >>

But the desert seldom disappoints and though between, this trip was no exception.  The beavertail prickly pear, studded with fat pink-green buds, were clearly about to burst into glorious magenta bloom only after we were gone.  But the tips of the Ocotillo were in flame, and in the few days we were there their thorny bleached stems scaled over with green leaves.  Little fishhook cactus rocked coronas of creamy blossoms that looked glued onto their heads like fake straw flowers on a hat.  In places, a tide of tiny goldfields washed around the feet of gray wintery shrubs (see photo at bottom of post).  The mesquite and desert willows were still bare, but the Elephant trees (Bursera microphylla) were green with their incense-scented leaflets, and deer vetch, creosote, and desert lavender were all blooming.  Tangles of red-flowered chuparosa scrambled over granite boulders, and in tight crevices fronds of “resurrection plant” or desert mossfern (Selaginella sp) unfurled, instantly green and pliant after recent rains.

<< “Fishhook cactus” Mammillaria (probably) dioica.  They need no more than a fracture in rock for a foot-hold, and seem to require no soil at all.

Birds were also in a between season: Rock wrens and Black-throated sparrows, present year-round on the rocky hillsides, were ubiquitous and vocal, along with Cactus and Canyon wrens, Costa’s hummers, quail, and ravens.  There were only occasional passers-through: a Lincoln’s sparrow in the palm oasis; surprising numbers of Sage thrashers moving through the Bow Willow wash. But the summer visitors were barely starting to trickle in — we found a couple of male Scott’s orioles alternately singing their ringing song and molesting nectar-oozing Ocotillo flowers, a Common Yellowthroat working the dense understory at the palm grove, and an Ash-throated flycatcher k-brkk‘ed near the campsite.

A Black-throated sparrow; who says sparrows are plain?  (photo E.Shock) >>

Surprisingly, we were between when it came to snakes, too — we saw none, but I’m sure they were out.  On the other hand, lizards were plentiful.  Blue-bronze Granite Spiny lizards basked, and we were ignored hard by a harlequin Baja California Collared lizard sunning on a boulder right next to the trail.

<< Baja California Collared lizard (Crotaphytus vestigium) is a species of collared lizard found only in a small range in the US, as its name indicates.

The only disappointment of being between was that our transportation was between, too: we discovered after arriving that the truck’s four wheel drive wouldn’t lock in, leaving us with high-clearance passage but wimpy traction.  This wasn’t an emergency but it ruled out more remote, difficult roads — we could only go where two-wheel drive or our two feet could take us, which turned out to be plenty for the short time we had.  But we missed some interesting habitat like the Carrizo Marsh, and intriguing, fossiliferous geology that E is itching to check out.

We’ll have to get that 4-wheel drive fixed so that instead of between, next time we’ll definitely be smack-dab.

Low carpet of yellow wildflowers I know only as “Goldfields” >>

* The term “Colorado Desert” generally refers to the portion of the Sonoran Desert that lies within the state of California.

Posted by Allison on Mar 26th 2012 | Filed in birds, botany, field trips, natural history, reptiles and amphibians | Comments (5)

What happened at Beit Bat Ya’anah: part 15

This is the latest installment of the series. The following links will take you to the last episode before this one, and the very first episode of the series:

Read Part 14 ………………………………………………………………….For new readers: Read Part 1

Previously:

Having extended her time at Beit Bat Ya’anah to try to learn more about Szeringka’s elusive protégé, Einer Wayfarer also continues to gather info about the site itself. “Beit Bat Ya’anah means House of the Ostrich’s Daughter,” Amit Chayes had told her. “There used to be an ostrich farm on the site. Ask Moshe sometime – he loves to tell that story.” Since the professor now finds herself dreaming about herds of strong-toed ostriches wandering freely among the jumbled rocks of the Upper Wadi, she resolves to ask Moshe about this part of the site’s history.

Moshe’s tale part 1: hai bar and hospitality

“And so you must imagine the greening of the Wilderness!” Moshe declared to his audience of one. The dim light strings edging the dining tarp barely lit the tables, making the dark only slightly brighter than actual starlight. Equipped with rough but expressive English, Moshe struck Wayfarer as an enthusiastic storyteller, and his usual short temper was nowhere in evidence. The professor supposed it was because he was momentarily playing camp host and not manager. She made a scholarly mental note: the guest-host relationship, well-documented from antiquity, was still thriving in this part of the world. She filed the thought, and caught up with his tale.

“Such heroic years back then, when the Negev was tamed by man’s hand, made fruitful for all the people.” Moshe gestured grandly towards the dark, vacant land wrapped all around the camp. Wayfarer assumed it was a symbolic gesture, meaning other parts of the southern desert: the barren stony flats below the ridge at Beit Bat Ya’anah seemed never to have received the benefits of human efforts, or shown results if they had.

“Kibbutzim like the oasis Yotvata at Ein Radian; Sde Boker, Ben Gurion’s last home,” Moshe continued with his bold pioneer theme. “Revivim raised from the sand – these places and more had sprouted with hope and irrigation and hard work, so that there were vines and olives and lemons, fields and schools and houses, where before there were just barren stones, wild beasts, and serpents.”

And fellaheen villages, and Bedouin tents and herds. Wayfarer’s adamantly impartial brain – the one she applied to her student’s papers, colleagues’ talks at meetings, and her own research – supplied this thought silently. She was interested in facts, complexity, cause and effect, and had no patience for a sanitized one-sided story, whatever the historical setting.  Unaware, Moshe went on.

“But some people saw that though the land was filling with men, their farms, and factories, in another way it was empty. Long before the State, and after rifles became common, hunters shot everything that moved and no one cared. Oryx, ostrich, crocodile, wild ass, cheetah, ibex – they all were gone from the wild places. Many of the places were gone, too: not gone, but improved, no longer wild enough for the animals. So began Hai Bar, the “wildlife” project to put back wild creatures of the Bible into the land, and make national parks and nature preserves for them to live in, like Noah’s Ark on land. At this time the government was paying big money for animals to put back in the desert. It was an expensive project.” He paused, then jabbed one finger decisively into the air.  “And that is where the Greenboim brothers come in.”

“Ah, the Greenboim brothers,” said a voice from the dark. At the edge of the circle of light, Wayfarer could see Wilson Rankle heading toward the mess tent. “Just getting a cola,” he explained.

“The Greenboim brothers?” Wayfarer asked Moshe.

From the tent: “They must have been one slick pair of…”

“Businessmen,” Moshe stated, raising his voice over the unsolicited commentary. “The Greenboims: Danny and Avidor, brothers from Jerusalem, looking for a way to help the country and to make money at the same time. All these wild animals had to be bought from other desert countries then brought here at great expense – do you know how much the Shah of Iran wanted for a fallow deer, or the Saudis for an oryx? Danny and Avidor hated the thought of so many Israeli lirot flying out of the country. They asked why couldn’t the money stay here, why couldn’t some of the animals be raised here? Cheetahs, hyenas, leopards, no thank you, Danny didn’t want to get involved with sharp teeth and claws. But an ostrich, that was another story – just a very big chicken, yes? The eggs and young birds could be sold to the government for the nature preserves, yes? And Avidor had experience – he’d worked in a South African ostrich farm as a young man. So, they decided ostriches. The Greenboims would be rich, and the desert full of big birds again: a solid plan. Now all they needed was land, and after a lot of searching, this dry ridge was where they came, holding a lease from the government. They put up fencing to hold in the birds and keep out the leopards and hyenas…”

Wayfarer’s pale blue eyes opened a little, an eaglish, sharpening look that any of her students would have recognized with unease. “Hold on,” she said, “I thought you said there were no wild animals left.”

Well, maybe still a few,” Moshe acceded. “This part of the Negev is far: now, and more far back then, sof ha’olam smola – at the end of the world go left, yes? That was why the land was available.” Having cleared up the point, and received no further interruption, he continued. “There was water at the old spring house back in those days, and they built the lab building to hold incubators for the eggs and a place to make food for the chicks, and the ostriches multiplied…”

“Just a minute,” the professor broke in again, valuing accuracy even above formulaic narration. “You skipped something. Where did their breeding stock come from, if ostriches were extinct in the wild?”

Moshe didn’t have a chance to answer. Wilson Rankle erupted from the mess tent wielding an opened bottle of cold cola, and stepped into the light. Hat-free, the director’s combover was neatly in place. Below it his forehead was pale and his nose was pink. “Where the hell is Dario?” he demanded.  As usual the question went unanswered. Rankle sputtered, “That idiot forgot to padlock the refrigerator!”

“You padlock the refrigerator?” Wayfarer exclaimed. She recalled having that thought about him her first afternoon in camp, without suspecting its literal truth.

“And the pantry,” grumbled the archæologist. “Only at night, for the same reason we padlock the tool shed. Otherwise the Bedouin boys – natural thieves, the little thugs – will sneak over in the dark and help themselves.”

“More likely the Aussies will,” joked Moshe, winking at Wayfarer. “But really, it’s only to make sure the door stays shut to hold in the cold all night when the generator is off. You can’t lock a tent.” He winked again.

The winks surprised her. To Wayfarer’s further surprise Rankle crossed to their table, swigged his cola, and settled as if he meant to socialize. “I can’t believe Chayes entrusted that pain in the ass with a key… he’s flakier than the girl. And I wouldn’t put it past him to help himself to a midnight snack, either.” He seemed to expect support from Moshe on the topic, but only received a shrug.

“That pain in the ass keeps kashrut okay,” Moshe said pragmatically, “which saves time and water. And saves me from more gray hairs.”

And his cooking is a noticeable improvement,” Wayfarer commented. “Go on, Moshe; you were about to explain where the ostriches came from.”

Rankle said, “From what I’ve heard, they stole them.”

“There was no stealing.” Moshe waved a hand. “And who’s telling this story, I ask you?”

Rankle looked at him, then at Wayfarer, then back at Moshe.  “Pardon me for interrupting this… private party.” He stood. “Just make sure the refrigerator is locked up tight before you go to bed, will you?”

Ken betach, sure okay, if I remember so long,” the camp manager replied, knocking his gray head with weather-beaten knuckles as Rankle headed back towards the lab, still clucking about “natural thieves”.  Once he was out of earshot, Moshe said to Wayfarer, “I hate to spoil his big bad mood, so I didn’t say – it’s me who unlocked the refrigerator. I thought a cold drink would be nice for our desert story.”

He disappeared into the mess tent, then came out, the host once more, carrying a plastic pitcher of mits and a bowl of something that looked like a beige version of the horrible puffy snacks Wayfarer had banned from the computer room for depositing an orange residue on terminal keyboards. Moshe placed the bowl near her, and held out his palm in invitation. This soon after dinner, the professor was neither hungry nor thirsty, but she dutifully accepted her role as guest. She took the plastic cup of reconstituted fruit juice Moshe offered – there were ice cubes in it, the first she’d seen since arriving – and tried one of the starchy puffs.

“Is this… peanut butter?”

Ken, yes; Bamba snacks – zeh tov, zeh tov, it’s good for you, all natural. More, please.” He pushed the bowl closer. “They put vitamins in.”

“What an extraordinary flavor.” Wayfarer intended this response to be imprecise enough to pass for approval.

But Moshe didn’t seem to notice her lack of enthusiasm: he was shaking his head again, staring after Rankle. “All season he’s like this with me… How do you steal ostriches?” he demanded. “Feh!” He swiped his palm through the air dismissively. “There was no stealing,” he said.  “They did not steal ostriches,” Moshe raised his shoulders. “Well, at least not exactly…”

To be continued.

Posted by Allison on Mar 20th 2012 | Filed in Beit Bat Ya'anah, archaeology, art/clay, artefaux, pseudopod waltz | Comments (0)

Next »