in the rapid stream, hirundo rustica flies rapidly across the river.

aerodynamic animal autumn backyard broadwinged camouflaged carnivorous cliffnesting colorful crested curvedbeaked diurnal dustbathing egglaying feathery fishcatching fishpond flightless flower garden geology gliding grass green herbivorous highpitched hollowboned insecteating iridescent jungle keensighted lawn leaf longlegged lowpitched meadow migratory molting nature nectardrinking nesting nocturnal omnivorous perching plant plumage pond predatory reflection reptile rock scavenging seedeating sharpbeaked shorttailed skysoaring soaring social solitary stream sunlight swiftflying territorial treedwelling undefined vegetation water waterbird watercourse waterdwelling waterfowl waterproof webfooted wetland wilderness wildlife wingflapping woodland wormdigging yard