Photos from this morning’s walk @ Cove Island Park. Moon over Cove Island Park photos here. And daybreak sunrise photos here.
Tag: Birds
Some events are simply too big for us to fathom.
Some events are simply too big for us to fathom. Bird migration, for instance, happens twice a year on a planetary scale that bruises the brain, so we’re forced to look for evidence in the traces around us: Skeins of geese and vanguards of vireos in the sky; a four-day mob of warblers passing through the neighborhood on their way from somewhere to somewhere else. A waxwing slain beneath a living-room window, its biannual journey stopped dead by the sky in a pane of glass. The Baltimore oriole that arrives in the yard next to mine every May 1 or 2 and starts advertising his availability for a mate. Up to 3.5 billion birds and more than 600 species migrate across North America each spring, mostly at night, but usually we can see them only looking up from the ground.
BirdCast lets us look down from above, and that changes everything. A joint project of the Cornell Lab of Ornithology, Colorado State University and U. Mass Amherst, it’s a website that lets us see them from a vantage point hundreds of miles above Earth, capturing each night’s continental migration as collected by over 140 radar stations across the country — data gathered about birds on the wing. The site went live to the public in 2018, around the time my own birding was deepening from a lifelong side project into something more personally, even spiritually, necessary — a way of being in the world that I had trouble finding elsewhere. After 40 mostly satisfying years as a film critic, I began to feel all those imagined visions closing around my head. I yearned to shake them off, to return to reality; birding has come to seem one of the more graceful ways to do that. […]
To me, the nightly BirdCast map has come to mean a great deal, not least a corrective to our human-centric view of the planet. BirdCast reorients us in both space and time. It shifts our understanding of ecosystems from the narrow — the street, the neighborhood, the town — to a vast globe that birds traverse twice a year because they must. Looking at that ceaseless neon flow forces a viewer to acknowledge patterns that long predate our appearance on the stage and, unless we succeed in our drive to kill everything on the planet, could long outlast us. Within this epoch the thing that matters — a bird setting out on a journey a thousand miles long, not data but feather and bone — is still here. But BirdCast helps us see that one creature and ourselves as fractals of a larger picture in which we are infinitely smaller yet bound by conscience and consciousness to obligation.
— Ty Burr, from “Trying to Find Your Place in the World? Try Birding From a Different Angle”. (The New York Times · April 18, 2023)
Notes:
- DK Photo: April 9, 2023, 6:30am Cove Island Park. More photos here.
Sunday Morning (Miracle. All of it.)
Of all natural patterns, the one I think that moves me most, is the sight of a flock of wild geese.
A single goose passing high overhead carries with it a sense of freedom and adventure. “He is,” in the words of Hal Borland, “the yearning and the dream, the search and the wonder, the unfettered foot and the wind’s-will wing.”
But a complete formation of geese is, for me, the epitome of wanderlust. Each one leaves me, no matter what I happen to be doing, wondering how long it will take me to pack my bags. And it’s not just migratory restlessness, the knowledge that by dawn the flock will be in other climes. I don’t feel the same way about swallows. There’s something about the goose formation itself, that arrowhead symbol of limitless horizons, that hints at appropriate and meaningful adaptation. A sense not only of going somewhere, but of doing so together in the best possible way.
Observations of geese in passage, show that they invariably adopt a “vee” formation, flying on the same level, equally spaced out but not necessarily along arms of equal length. The important thing seems to be that the vee must have an apex – that the leading bird should always have others on either side.
It has been suggested that this characteristic formation is nothing more than a simple consequence of the fact that geese have immobile eyes on the sides of their head; and that, with the beak pointed forward, the best way to keep a neighbouring bird in full view is to take up a place just behind it, either to the left or right eye side. But direct measurement of flights of Canada geese shows that the angle between the arms of the vee formation varies even in a single species between 28 and 44 degrees, which doesn’t necessarily correspond with the fixed angle of clearest focus.
Another theory suggests that the vee formation allows one goose, presumably a stronger and more experienced bird, to lead the way, cleaving a path through the air for the others. But, once again, field studies show that the leadership changes constantly and that this position, far from being reserved for wise old ganders, is in fact shared out amongst the younger and weaker members of the flock.
The answer seems to be largely aerodynamic. A recent computer study shows that there is an upwash beyond and behind the tip of a moving wing that can be useful to other birds nearby. If the spacing between wings is optimal, this saving in energy can be considerable. For instance, a formation of twenty-five birds can, just by adopting the most favourable formation, increase their effective range by 71 per cent.
And this seems to be precisely what happens. Travelling geese usually fly in groups of around twenty individuals and invariably adopt a vee formation. If they flew in line abreast on a common front, the birds in the centre would enjoy twice as much uplift as the ones on the ends of the line. But as soon as the line is bent backwards, the ones at the rear begin to pick up additional upwash from all those in front, which effectively cancels out most of the disadvantage of their position. And as they travel, other small inequities which may exist are dealt with by regular and democratic changes of place.
– Lyall Watson, Beyond Supernature: A New Natural History of the Supernatural
Notes:
They’re back…
Atlantic Brants — hundreds upon hundreds of these marvelous creatures landing at Calf Pasture Beach at sunrise. Pit stop? They breed on the high-arctic tundra.
Notes:
Yep.
Notes:
- Photo: DK @ Gull @ Daybreak. 42° F. 6:48 am. September 24, 2022. Cove Island Park, Stamford, CT. More photos from this morning here.
- Quote Source: @jessecase (via Last Tambourine)