Gulls in Cental ParkBird Abstraction 1Hovering TernBlack SkimmerBird abstraction 2Bird abstraction 3Gull abstraction 1Gull abstaction 2Mallard Ducks Central ParkBird abstraction 4Gull Abstraction 4Bird abstraction 5TernsBird Abstraction 5Bird Abstraction 6Bird Abstraction 7Bird Abstration 8black skimmer abstraction 1Bird abstraction 9Black Slimmer abstraction 2