Recurvirostra, from recurvus=turned back, and rostrum=the beak.
Bill long and flexible, turned up, channelled above and below. Remiges twenty-nine. First quill longest. Tarsus reticulated. Hind toe small. Anterior toes deeply webbed, webs notched in middle. Swim well. Avocets, from their strongly webbed feet, were classed by Temminck and others near the Flamingo. Nearly cosmopolitan.