motacilla alba lugens chirping by the stream

avian aviary beak binoculars birding birds birdsong birdwatching call chicks chirp coastal courtship crow eagle egglaying eggs falcon feathers finch fledging flight flock flocking flutter flying forest glide habitat hatchling hawk heron hover incubation kingfisher mating migration migratory nest nestbuilding parrot pelican perch perching pigeon plumage predator predatorprey raptors raven robin roosting scavenger shape shorebird song songbirds sparrow species swallow swoop talons territorial undefined wader wetlands wingbeat wings wingspan woodpecker