- Alcidae, family Alcidae - web-footed diving seabirds of northern seas: auks; puffins; guillemots; murres; etc.
--1 is a kind of bird family
--1 is a member of Charadriiformes, order Charadriiformes
--1 has members:auk; Alca, genus Alca; Plautus, genus Plautus; Pinguinus, genus Pinguinus; Cepphus, genus Cepphus; Uria, genus Uria; puffin; Fratercula, genus Fratercula; Lunda, genus Lunda