pair of bufflehead female ducks

avian background biology bird birding birds buffle bufflehead circadian conservation cycle distance distant ducks ecology feathered female filled flap flight flock gamebirds gathering habit klamath lake legend lower mallard marsh marshes migrate migrates migration migratory mountain ornithology pattern reeds reflection refuge rhythm season seasonal shape shorebirds silhouette swamp swans teamwork tule tules vast waterfowl wetland wetlands wild wildlife winged wings wonder together buffleheads waterfowl aves secluded