Black-legged kittiwake

Black-legged kittiwake standing on rock ledge..Black-legged Kittiwakes nest on narrow cliff ledges on offshore islands or inaccessible areas of coastal mainlands. Often, the ledges are barely wide enough to fit a nest and birds; the adult and chicks must sit on the nest facing the cliff with their tails hanging off the edge. Nests are composed of seaweed, grass, feathers, and mud to cement them together. Kittiwakes are colonial nesters and colonies may vary from a few nests to many thousands.