Mystery Bird: American Avocet, Recurvirostra americana

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[Mystery bird] American Avocet, Recurvirostra americana, photographed in Arizona. [I will identify this bird for you tomorrow]

Image: Richard Ditch, 2007 [larger view].

Date Time Original: 2007:03:09 09:10:55
Exposure Time: 1/1250
F-Number: 8.00
ISO: 200

Please name at least one field mark that supports your identification.

Since I know this bird is easy for you guys, I am going to ask you to tell me what you think the bird is doing, standing there like that with its wings standing straight up.

Rick Wright, Managing Director of WINGS Birding Tours Worldwide, writes:

Few indeed are the shorebirds with clear blue legs and feet (we see here the tibia and a bit of the tarsus, along with the stout ankle joint). The black-and-white wing, russet neck, and upcurved bill leave us no real alternatives: what could it be but an American Avocet?

Red-necked Avocet really isn't that similar. In addition to the different pattern of neck and head, this lovely portrait shows the dark inner primaries characteristic of American Avocet; the same feathers are white on Red-necked.

What do we do when we encounter so easily identified a bird? We try to go further. In this case, the abruptly upturned bill tip lets us identify the bird with some confidence as a male; female American Avocets have more evenly and more gently curved bills.

Review all mystery birds to date.

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Well, assuming it wasn't involved in a strange accident involving a rubber wall, it's an avocet. Now, unless Arizona has moved, it's in the US, so it must be an American Avocet.

It looks like the photo on Wikipedia too, so it must be.

That's an American Avocet. For field marks, well, the bird has the unmistakable appearance of... an American Avocet. The black and white pattern and the recurved bill are the first things I notice, I guess. The bird's overall silhouette is pretty unmistakable, too.

This is an adult in breeding plumage (the buffy head and neck), and I think it's a male, based on the beak curvature being slightly less than it would be in the case of a female.

What Bob and John said.

American Avocet. The upward-curving bill is the big giveaway, but the rusty head is pretty distinctive of a breeding bird.

By Selasphorus (not verified) on 26 Oct 2008 #permalink

Whoo, another I can do thanks to a summer research project! That's definitely an American Avocet. The red head combined with the black and white body and the curved bill makes it extremely obvious if you've seen them before. Or trekked through numerous wetlands marking and counting their eggs and nests over and over to determine nesting success rates.

I know this is an American Avocet. This summer I saw several birds in this stance; I thought they might be defending their nest terrority. Either that or maybe a stretch after sunning.