Tricolored Heron, Egretta tricolor
Above and below, wintering Tricolored Herons in non-breeding plumage, with yellow-and-gray bills and yellow legs, in Mexico and Florida respectively.
Tricoloreds in full breeding plumage, white head plumage, blue and gray bills, and reddish legs, both in central Florida in March, the one below also carrying nesting material.
Above, on the Texas Gulf Coast in April, a bird in breeding plumage but not at the hormonal peak of breeding season, as shown by legs gray rather than reddish.
