hybrid bird, a mix of european herring gull larus argentatus and glaucous gull larus hyperboreus standing on a wall

alone animal aquatic argentatus background beak big bird blue close cloudy coast coastal europe european fauna feather first fly freedom glaucous gull harbour herring hybrid hybridisation hyperboreus larus lista mix nature nelsons nobody norway one outdoor plumage post rare sea seabird shore side sky standing viking wall waterbird wildlife