any of a genus (Rissa) of small gulls of the northern oceans, that nest in cliffs and have a short or rudimentary hind toe
See kittiwake in American Heritage Dictionary 4
(kĭtˈē-wākˌ)
noun
Either of two gray gulls (Rissa tridactyla or R. brevirostris) of northern Atlantic regions, that winter on the open ocean and nest in colonies on sea cliffs.