by the stream and treetops, gracupica nigricollis sings in flight.

avian backyard beak behavior bird birds birdwatching breeding chain chicks duck ecological ecology ecosystem egret endangered environment feather feathers feeding fish fishing flight flower food foraging freshwater garden gracupica grass green habitat hunting incubation intertidal lakes migratory natural nesting nests nigricollis pecking plankton pond predation river rivers rock roosting schools season shoreline sings soil stream structure territoriality tree treetops undefined wall water waterbird waterbirds waterway wetlands wildlife wings wingspan yard