三指鷗
Kittiwake \Kit"ti*wake\, n. (Zo["o]l.) A northern gull ({Rissa tridactyla}), inhabiting the coasts of Europe and America. It is white, with black tips to the wings, and has but three toes.
kittiwake n : small pearl-gray gull of northern regions; nests on cliffs and has a rudimentary hind toe