Monday, August 30, 2010

Apology to a Small Creature

Early this morning, within my peripheral vision, something large, silent, and swift descended into one of the hydrangeas near the deck where I sat contemplating the hummingbirds at the feeder. This is the season in which hummingbirds come by twos, threes, and fours, nattering away at each other. I had intended to write about their tiny hanging feet today, but the Cooper's Hawk in the hydrangea instantly changed my focus.

A noisy rustling skirmish in the leaves under the bush indicated the hawk's success at hunting its breakfast, but then---oh terrible then---it abandoned the prey it had only maimed, spread its powerful wings, and flapped twice to perch on the back of a patio chair facing away from me, not ten yards from where I sat. I know not if it was aware of my presence when it first attacked the hapless creature below, but now it turned its head and looked me in the eye. I hadn't moved except to turn my head toward the skirmish. Was I the reason the hawk so cruelly left that poor creature to an agonizing death? I shuddered at the piteous konk-konk-konk-konking in the throat of the small dying thing, whatever it was. I could see the movement of the leaves, and hear the konks, but could not identify it---could have been a bird or a chipmunk hidden in the dry leaf cover.

After a few seconds of eyeing me from the chair, the young hawk, with horizontally striped tail and white splotchy feathers in its back, flapped to a new perch on the fence, where it stayed for several minutes before offing into the woods with only two flaps and a glide. A few minutes later, it startled me again by flap-flap-gliding past my shoulder, low and close enough for me to hear the whir of its wings against the air, though it did not return to the place of its terrible deed. Again it disappeared into the woods. Had it been stalking me to see if it was safe to return to its breakfast? Is this the same young hawk that has watched me garden?

From under the hedge adjacent to the hydrangea, where the maimed prey was somehow able to take refuge, the konking slowly, gradually, terribly, grew weaker and weaker, until it stopped after about ten minutes.

It is not to my credit that I was too squeamish to assist it to a faster death. I have neither the heart nor the stomach for such a task. But now I must live with the aural memory of those diminishing konks, wondering at my responsibility in this event.

The hummingbird feet will keep until a later post. dkm

Wednesday, August 25, 2010

Beetle in Shock & Robert Frost

For too many days I've given my backyard over to the heat, the mosquitoes, and a bad mood about not getting to my real work of writing. But this morning the thermometer reads 72 degrees, offering hope. The air is cooler but the mosquitoes are relentless. So much for restoring my mood by sitting outside. I'll be driven in soon, with mosquito-slapping.

Still, the birds sing, the dogs bark, the crickets drone, the squirrels chase, the tiger swallow tails go on intoxicating themselves in the little white tube blossoms of the abelia bushes. A pine cone falls on me from the branch overhead. Whether dropped by a squirrel, or released by its branch, I know not, but it splattered, dry and brittle, on my head and arms. One of the broken pieces landed on the hem of my shirt and didn't fall away like the others. Turns out it's a small brown beetle clinging for its life to the stillness of my shirt, legs and antennae tucked under its hard dry shell, looking for all the world like a piece of pine cone, but not acting like one.

It must have been a terrifying free-fall for a beetle who thought he had found safe refuge in a pine cone far from the madding crowd. When I nudged him with my pencil his antennae and legs popped out as if to say, "What? Am I still alive?" After a moment he crawled away, but not before getting a reading from his wildly waving antennae about his new situation.

Magically, in the time it has taken to write this entry, the mosquitoes have gone away, slow breezes waft, and my bad mood has lifted. It brings to mind yesterday's NYT article about the negative side-effects of constant digital connection, and the energizing effects of a little time spent in nature.


Robert Frost wrote about it too:

Dust of Snow

The way a crow
Shook down on me
The dust of snow
From a hemlock tree

Has given my heart
A change of mood
And saved some part
Of day I had rued.

.

Monday, August 9, 2010

My Ugly Bald Cardinal

Mites: the answer to the question of July 20's post, "What caused my beautiful father cardinal to go bald?"

According to Dr. Zinn, friend and ornithology consultant, head mites are common among cardinals. They can preen the mites from their body feathers, but not from their heads.

Like many phenomena of nature, this one is sad, true, easy enough to understand---and renders a thing of beauty ugly---REALLY ugly.

Knowledge of the presence of head mites prompts other questions and more online research, though I can't vouch for the answers I found on the blogs of other birders: Are the mites harmful to the longterm health of the cardinal? No. Will the mites die off like insects in winter? Yes. Will the cardinal's head feathers grow back? Yes. Will the eggs of the mites left in abandoned nests survive the winter and begin a new generation next spring? Yes.

The particularly frightening, bald, black-headed, mostly-red patriarch of the cardinal nests in and around my backyard, still frequents the feeder over the deck, as do his comical first-year offspring. His mate and children are all varying shades of tan with reddish tails. One tall skinny daughter with disheveled yellowish feathers hops on the deck looking quite shell-shocked. She eats only the debris on the deck floor beneath the feeder, but her more aggressive brothers, equally comedic, vie for direct time and place at the portals of the feeder. Some of them are splotchier than others as they molt to exchange their brown feathers for red. The adolescent males exercise their crest feathers up and down, strutting and prancing, discovering their male prowess, providing us with great summer theater through the window.

One of them, poor baby, is beginning to show signs of mites---that is, losing feathers about his neck and head. It's the cardinal equivalent of male pattern baldness. dkm

Monday, August 2, 2010

The Hawk Next Door

By its size and stubby tail, I know the hawk that accompanies me while I work outside in the cool of the morning is a youngster. Male or female, I don't know, but it has a persistent whistle, which I hear often, even from inside the house, and this morning, from a lower bare dead branch of the dogwood just above my head.

It's a little unnerving to weed with a hawk watching my every move. What does it want? dkm

Thursday, July 29, 2010

The Colbert Report

It's been too hot to be outside---but I'm ever aware that the wild creatures who share their space with me can't share my luxury of choice about staying where it's cool. The life that teems out there has not stopped just because I'm not there to observe it.

All it takes to find a topic for a blog-post is to show up. (Wish I could remember to apply the same principle to my more intentional writing endeavors.) This morning, no matter the high heat, I spent a half-hour weeding in Sarah's 21st birthday garden, and sure enough, much presented itself about which to comment---mainly the hawk next door.

At first I wondered if it was one of our abundant bluejays mimicking a hawk's whistle, as I've been fooled many times before. But these whistles seemed too long, too persistent, too loud for a jay. I stopped weeding to look in their direction, in time enough to spot the powerful and majestic silence of a hawk taking flight from the fence between my yard and the neighbor's into the leafy canopy. Had this hawk been watching me weed? I had been aware of its whistle while I worked. It continued from some higher perch unseen, long after I returned to my hoeing.

I half-expected the Colbert Report to begin. dkm

Wednesday, July 21, 2010

Squirrel vs. Gravity and Safflower

Q: How long can a squirrel hang upside down without righting itself?
A: At least eleven minutes if an uncontested food source is involved.

I know because I timed it, and it would have been longer if another squirrel hadn't chased the first one away. I had cleaned up an old tube-shaped bird feeder that hangs from an arm on a pole in my garden and that I know is not squirrel proof. I refilled it with safflower seeds because the package said squirrels don't like them and finches do. Without dwelling on that bit of false advertising, I find it hugely surprising that a squirrel can hang upside down from a bar for eleven minutes eating ANYthing.

This squirrel's hind feet held tight to the bar while its body stretched long and thin and straight downward. I had an urge to tickle its pure white soft-looking belly. Its head and front feet snatched the seeds from the bottom of the feeder, barely within reach. Its tail flopped loosely around, I assume assisting with balance.

The whole spectacle seemed counter to everything I know about gravity. Wouldn't the pressure of blood draining into the squirrel's head cause it to turn upright once in a while? Wouldn't the downward force of gravity prevent the chewed and swallowed seeds from moving upward through a wrong-turned outstretched esophagus? How long could it have continued its upside down quest if it hadn't been chased away? These are questions whose answers can not be found on the internet. Still, I'm curious. dkm

Tuesday, July 20, 2010

Window Theater

What would cause a seemingly healthy male cardinal to go bald? At first he looked deformed, misshapen, splotchy red and black about the head, but as more and more crest feathers fell out, I saw that his head was perfectly round like a bird's head should be--and surprisingly black, when featherless. By now, he is frightening to behold, with bare black head above a body fully feathered in red. He never stills long enough for a photo.

The cardinal in question has come to the feeder outside the sliding glass doors since mid-May, almost certainly the patriarch of the nest in the neighbor's holly tree. Through two months of live-acting, he gradually revealed more and more black-skinned head.

First spied mating in the azalea thicket, then in and out of the holly tree, often on the banister feeding his beloved a sunflower seed from the feeder, he has been a model lover and father. Now his adolescent sons and daughters come to the feeder with him, sometimes lined up three at a time on the deck banister, waiting their turn on the feeder perch. The young are smaller and browner and comical looking, the males turning redder and cockier by the day. Only the absence of their father's head and crest feathers makes for a less than perfect family portrayal.

Is it caused by an environmental hazard, or is it genetic? I'm guessing the former. Either way, I half-expected the young to show signs of the same problem, since both their habitat and genetic codes are the same as their father's. So far, the new generation looks healthy. Time will tell.

Mysteries abound when one pays long slow attention. I would have expected more answers, fewer questions. It's been quite the opposite. The only truth revealed is that the more one sees, the more one finds about which to wonder. dkm

Wednesday, June 30, 2010

M.A.P.S. / Releasing a Bird

To hold a wild bird in one's hand is to touch the pulse of the natural world. The warmth of its bird body, the beat of its heart, the clutch of its foot around a finger, the quiver of wing. Each sensation, taken individually, was a thing of wonder; collectively, they coalesced into an awareness like no other, of such combination of frailty and bravery and stoicism and toughness and patience and endurance and perseverance and grace as to be a model for how we all should live.

Yet such sentient abundance paled next to the exhilarating release of tension that came from the lifting up and letting go of each bird---to feel it take leave, to see it first dip then rise into the air on its own power when only seconds before it had been powerless against the soft fold of a human hand. The high competence of a small bird in the face of what must have been a terrifying ordeal was exemplary. Unrolling my fingers to return each bird to its own wild brought a lightness of spirit to be remembered for a lifetime. dkm

Tuesday, June 29, 2010

M.A.P.S. / Banding a Bird

If a bird captured for momentary study does not already sport a numbered leg band, one is applied. Banding is the final step in the process, after examining the bird, after recording the collected data, and before the ultimate release. I could never have guessed how one goes about putting a metal band (I think it is lightweight aluminum---please correct me if wrong, Dr Zinn :-) around a wild bird's leg without hurting it, so again my curiosity was piqued.

Of course, as for most human endeavors, there are tools perfectly engineered for the task. The thickness of a bird's leg is first measured with a simple but cleverly designed instrument of calibrated notches, in order to select the correct size of band. The sizing instrument is a flat plastic card with notches along all four sides that correlate with all potential leg sizes. This photo shows the leg-sizing card, the apparatus for measuring the wing, and the hand pliers used to clamp on the band.
The bands are small metal tubes, open on one side like the letter "C," that come on a carefully regulated wire, so as to always be applied in proper numerical order. The precisely sized and numbered band is inserted into a specialty pliers, again with perfectly sized notches engineered so as not to injure the bird, and using the hand pliers, BINGO,the band is gently clamped around the shaft of the leg, allowing it to fit like a loose bracelet.

Swallow, little swallow, (a reference to Oscar Wilde's The Happy Prince), your discomfort is almost over. Next step, release, but for that near-religious experience, you must wait till next post. dkm

Monday, June 21, 2010

M.A.P.S. / Studying a Captured Bird

Most surprising of all the new information gained on my bird banding day was how gender and reproductive status are determined in species that look alike. The researcher blows on the belly to part the feathers, thus revealing either a female's "brood patch" or a male's "cloacal protruberance," both of which are red and swollen during the breeding season. The brood patch is a large featherless patch on the breast and belly with which the female warms her eggs or nestlings. The cloacal protruberance of the male is what it sounds like.

I found it comical to discover that the brood patch is assessed with descriptive terms like vascular, wrinkled, smooth, heavy, and molting, while the cloacal protruberance is assessed only for small, medium, and large. Make of that what you will regarding cross-species similarities, but don't deny that it makes you laugh.

Common Yellowthroat

Inspecting the feet

Measuring the wing of a cat bird

Determining flight feather wear

Blowing apart the feathers to assess "brood patch" or "cloacal protruberance"

Recording the data
The data collection was fascinating to watch. Each bird was inspected, measured, and assessed at close range for more than 30 specific bits of information, all of which were meticulously recorded, and many of which I had never before considered. My learning curve was high. Things like flight feather wear, molt limits, plumage; measurements of wing, skull, tail, body fat, eye color, mouth & bill, and much much more, for the purpose of determining age, gender, health, and reproductive status. Much of it was more technical than I was able to follow, though I found it intensely interesting---especially the myriad determinations about the plumage---the primary & secondary coverts (outer feathers), and inspecting the molt limits for primaries, secondaries, tertials, and rectrices to determine age, history, and health status.

If the captured bird already had a band on its leg, the number was recorded along with the new data, later to be entered into computer and compared with earlier observations of same bird. If not, it was given a band, a process to be described in next post. dkm