A quick observational browse through last night's recording data results in
these highlights:
4 Black-billed Cuckoos
2 Hooded Warblers
1 Black-and-white Warbler
2 Lincoln's/Swamp Sparrows
Nothing really Earth-shattering as far as rarity, but it was definitely an
active night.
Recently, I've be
"What is the theory for decreased contact/NFC calls as the night wears on?"
I thought one hypothesis(?) was that in the middle of the night the birds
are actually too high to be able to hear?
Has anyone ever tested empirically what elevation birds migrate at? I
would think this would be relativ
Got up at 5 am and listened for night calls, particularly thrushes,
and found a decent flight, especially as they descended between
540 am and 555 am. During this time there were so many
thrushes coming down that it was hard to count so I just
estimated my numbers. Many times it was hard to tell if
