Habitat: Coastal islands off the tundra, in summer. The rest of the year along coasts – on rocks or breakwaters.

Appearance: Yearling – migrant and winter visitor in fairly small numbers.

Breeding season: May – early July. Nest in a shallow hollow, sparsely lined with plant material, in open areas or hidden in vegetation. Usually 4 eggs.

Characteristics: Length 20 – 25 cm, wingspan 50 – 57 cm, weight 85 – 170 grams, age 20 years.

Food: Insects, crabs and crustaceans.