World Migratory Bird Day.

If you're in India it's Endemic Bird Day.  If you're in the States its Global Big Day or the World Series of Birding, depending on your proclivities for competition. In Europe the BTO and others have deemed it Migratory Bird Day. If you're in Colombia it's Try-to-hit-400-species Day.

Either way, right here in the north east a low pressure front has shut down movement overnight. And after a week of great birding, I have feeling everyone's going to find it tough to go out and get a blue riband big day this year.

I'm pretty happy to rest up though. I had my migration moment a few days earlier in Central Park, when after a week of not much action beyond yellow-rumps, I had a crazy tens minutes at Strawberry Fields, with one big oak (not the normal warbler tree either) simultaneously hosting yellow-throated vireo, blackburnian, bay-breasted, yellow and blue winged warblers among other newly-arrived gems. The next morning cape may and hooded both arrived in the park, and within 24 hours I'd seen most of what I'd wanted to see in New York City this year.

Now I need some warblers in Hudson County....


April; end of winter or beginning of spring?

It might be the cruelest month, but this April was crueler than most.  So I was surprised to see yesterday that I'd racked up around 115 species over the month. How so, when migration feels so late to start?

Checking my eBird records i realised that nearly all of these are late wintering species. RT Loons and Red-necked grebes right up the Hudson in Manhattan in April!  Late juncos and rough-legged buzzards. It reads like a February census.

I wonder if the same climatic effects delaying our migrant arrivals are also retaining these late-staying wintering birds?
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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