21.9.15

CONW (or COWA for some)


I stopped by Trinity Church this morning on the way to work, in response to a tweet from Ben Cacace about a Mourning warbler (which i still need in NYC), and it was hopping.

I guess it's no surprise given the radar blooms and northerlies last night, but my local Hoboken patch didn't turn up much this morning other than yellowstarts, pewees and 3 freshly arrived phoebes.

So it was a nice surprise to find one, and possibly two, Connecticut warbler lurking among the flowers and plantpots of the graveyard at Trinity. My first good find of the year since January's iceland gull.

I've still never seen an adult, but despite their drab appearance these juves are still nice birds - with a really striking walking posture and gait, like a pigeon in a tiny body, and the habit of lowering their heads and peering up at prey in a very deliberate fashion.

They're also usually shy, and I thought this individual was going to be scared off pretty quickly, especially when the first crowd of tourists arrived en masse and flushed it from behind a grave.

In the end, it was surprisingly confiding, clearly more intent on feeding after what was probably a lengthy flight in last night's northerlies. I guess it shows how hunger during migration effects behavior!




THIS shaky phone-bincoular shot doesn't really capture this unique skulker, nor does it's specific name, agilis, which means active.....

For some much better shots of yesterday's birds, see Jean Shum's website - which shows the feeding and 'peering' behaviour very well. 

I also received a bunch of shots from others who saw the birds later in the day, and my original suspicion seems to have been right. There were indeed two individuals, rather than one bird adept at teleportation.

This raises an interesting question. Either these were individuals migrating separately which happened to fall-out into the same 1.5 acre patch of greenery, which seems highly unlikely, or they are evidence of social migration in this taxa.

In fact, fall migration undertaken as a family unit has been documented in connecticut warblers, so these two birds perhaps represent the fruits of one nest and are first year siblings migrating together.

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About Me

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NYC, Buxton, Buenos Aires
I work in NYC and own a wildlife and wilderness agency specializing in the southern cone of South America. I still do some guiding down there, especially looking for Fuegian and Patagonian avifauna. I'm particularly interested in the wintering ecology of neotropical migrants, and in avian biogeography in general. You can follow me at - @domhall And find me at - AventuraArgentina.com