Common Guillemot

Common Guillemot
Scientific Classification
Kingdom: Animalia Phylum: Chordata Class: Aves Order: Charadriiformes Family: Alcidae Genus: Uria Species: aalge
Binomial name
Uria aalge

The Common Guillemot, known as the Common Murre in North America, Uria aalge, is a large alcid.

Adult birds are black on the head, back and wings with white underparts. The thin dark pointed bill. They have a small rounded dark tail. The face becomes white in winter. Western European birds of the race U. a. albionis are dark brown rather than black, most obviously so in colonies in southern Britain.

Their breeding habitat is islands, rocky shores, cliffs and sea stacks on

• north Atlantic coasts of North America as far south as New Brunswick and Europe as far south as Portugal.
• north Pacific coasts of Alaska and British Columbia.

They usually nest in tight-packed colonies and lay their eggs on bare rock ledges or ground. The eggs are pointed, so that if disturbed they roll in a circle rather than fall off the ledge.

Some birds are permanent residents; northern birds migrate south to open waters near New England, southern California and the western Mediterranean.

These birds forage for food by swimming underwater. They mainly eat fish, also some crustaceans, marine worms and squid.