white faced ibis flying mountain sky

avian background biology bird birding birds circadian conservation cycle distance distant ecology faced feathered flap flight flock flocking flying form formation gathering geese goose group habit hill hills ibis ibises klamath lower marsh migrate migrates migration migratory move ornithology pattern refuge rhythm season seasonal shine silhouette silhouettes sky soar strength teamwork tule tules vast waterfowl wetland wetlands white wild wildlife winged wings wonder airborne irridescent