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American Avocet (Recurvirostra americana); in Latin, a "rostrum" is a bill (beak); and "recurvus" means bent backwards.  The two words were combined to form the Genus name.  There are no subspecies.  This wading bird lives in the zoo in Milwaukee.
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WIKI:  The American avocet measures 40–51 cm (16–20 in) in length, has a wingspan of 68–76 cm (27–30 in) and weighs 275–420 g (9.7–14.8 oz)[8][9] The bill is black, pointed, and curved slightly upwards towards the tip. It is long, surpassing twice the length of the avocet's small, rounded head. Like many waders, the avocet has long, slender legs and slightly webbed feet.[10] The legs are a pastel grey-blue, giving it its colloquial name, blue shanks. The plumage is black and white on the back, with white on the underbelly. During the breeding season, the plumage is brassy orange on the head and neck, continuing somewhat down to the breast. After the breeding season, these bright feathers are swapped out for white and grey ones.[11] The avocet preens its feathers, commonly considered to be a comfort movement.[12]
The call has been described as both a shrill and melodic alarm bweet, which rises in inflection over time.[10][11][13] Avocets use three distinct calls: common call, excited call, and broken wing call.[14] The common call is a loud repeated wheep. The excited call has a similar wheep sound, but it speeds up rather than having an even rhythm. Lastly, the broken wing call is noticeably different from the other two calls. It is a distressed screech sound and is alarming rather than melodic.
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Listen to it:  https://www.youtube.com/watch?v=2Gdtmc2mC-E
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BEST IN LARGE.