the caspian tern ( hydroprogne caspia )

waterbird shorebird waterfowl wildlife seabird wetland mudflat animal shore ducks marsh coast water flock bird duck gull beak sand sea animal animals avian background beak beautiful bill bird fish caspian caspian tern terns catch environment fauna feather fishing flight fly food habitat hunting hydroprogne caspia lake lake michigan migration natural nature outdoor outdoors plumage seabird seabirds seagull shore sky soaring spring tail water wild wilderness wildlife wing wings wingspan