It sat in place for a good while then ripped at some grackles too fast for me to track
Sounds like a bird eater to me. I , last night went back to my books , but I was still unconvinced either way, so personally I would trust your call whichever way you made it , having seen the bird live.
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I think the norm for this Central fl location is usually long billed , since its inland fresh water, ebird confirms it as short billed , and I agree with them, the neck looks tucked in belly and back flat , and the bill isnt excessive ( I have a better shot if the tail if you want to see it) but anyway I wonder how many of the reports are one person following the lead of the next , because they
really are very much alike. For some distinctions I think it may really be ones innate bias what they decide. You come down to fla , and I want you to have the short-tailed , ( marvelous to watch ) but that isnt really scientific.
Care to weigh in on the Dowitcher?
Anyway , I saw a pair of broadwings hunting down here once, they made short trips through the understory , then perched a while , and moved on , in tandem. The short-tail , did the divebombing thing like a falcon. Wheeler and Stokes didnt have a pic of the dark version of the broadwing , so Perhaps its rare. Dunno.
OOp , I went back and checked , and it seems they changed to long-billed , whatever.