American Avocet

in #bird7 years ago

servation status Population probably stable or possibly increasing. Numbers occurring in east (as migrants and wintering birds) have increased greatly during recent decades. Undoubtedly vulnerable to the effects of climate change, which are likely to cause major changes to western wetlands.
Family Stilts and Avocets
Habitat Beaches, flats, shallow lakes, prairie ponds. Widespread on shallow waters and extensive mudflats, both along coast and in the interior. Typically in very open situations, with little vegetation. Inland, often favors salty or alkaline lakes more than fresh waters.
Around lake shores and tidal flats, especially in the wide-open spaces of the west, flocks of elegant American Avocets wade in the shallows. They often feed while leaning forward, with the tips of their bills in the water and slightly open, filtering tiny food items from just below the surface. Sometimes a flock will feed this way in unison, walking forward, swinging their heads rhythmically from side to side.
Photo Gallery
adult male, breedingadult, nonbreedingfledglingnonbreeding adultsbreeding adults
Feeding Behavior
Forages in a variety of ways. Often sweeps head from side to side, with upturned tip of bill barely submerged in shallow water, finding food by touch. Also finds food visually, picking items from surface of water or mud, or plunging head into water; sometimes snatches flying insects as they pass.

Eggs
4, sometimes 3-5. Olive-buff, blotched with brown and black. Incubation is by both parents, 23-25 days. Female incubates at night, both sexes take turns during day. Young: Downy young leave nest soon after hatching, find all their own food. Both parents tend young. Age at first flight about 4-5 weeks.

Young
Downy young leave nest soon after hatching, find all their own food. Both parents tend young. Age at first flight about 4-5 weeks.

Diet
Mostly small crustaceans and insects, also some seeds. Feeds on abundant tiny creatures that live in or near shallow water. Diet includes many midge larvae and other aquatic insects, small crustaceans. On lakes in west may feed heavily on brine shrimp and brine flies.8.jpg

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