back view of lesser blue-morph snow goose flapping its wings to climb over a tree trunk, with other birds on either side of it

anser area atlanticus back background beak bill bird birds black blue body caerulescens canada cap city climb cold covered dark darker day dirty feathers flapping focus food fresh goose grass heavy herbivore juvenile large lesser looking migration migratory morph nature other over park pink plumage quebec red remaining snow soft standing tips tree trunk view white whitemorph wild wildlife wing winter