the caspian tern ( hydroprogne caspia )

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