dunlin shorebirds flock in flight

avian biology bird birds circadian cloudy conservation cycle distance distant dunlin ecology feathered flap flight flock flocking fly flying form formation gamebirds gathering group habit hill hills klamath lake lower marsh migrate migrates migration migratory move national ornithology pattern preserve reeds refuge rewild rewilding rhythm ross season seasonal shape shine shorebirds silhouette sky snow soar soaring strength teamwork tules vast wild wildlife winged wings winter wonder