Guillemot

The common guillemot (Uria aalge) is a large auk. It is also known as the thin-billed murre in North America. It has a circumpolar distribution, occurring in low-Arctic and boreal waters in the North Atlantic and North Pacific. It spends most of its time at sea, only coming to land to breed on rocky cliff shores or islands.

It has a spectacled version, with a white ring round the eye and stripe behind it.

Guillemots have fast direct flight but are not very agile. They are more manoeuvrable underwater, typically diving to depths of 30–60 m (98–197 ft). Depths of up to 180 m (590 ft) have been recorded.

They breed in colonies at high densities. Nesting pairs may be in bodily contact with their neighbours. They make no nest; their single egg is incubated on a bare rock ledge on a cliff face. Eggs hatch after ~30 days incubation. The chick is born downy and can regulate its body temperature after 10 days. Some 20 days after hatching the chick leaves its nesting ledge and heads for the sea, unable to fly, but gliding for some distance with fluttering wings, accompanied by its male parent. Chicks are capable of diving as soon as they hit the water. The female stays at the nest site for some 14 days after the chick has left.

Latin Name
Uria aalge

When the bird was spotted

Date Location Title Seen by Interestingness
UK, Teesside and the North York Moors ha b.m.stokesley **
UK, Teesside and the North York Moors North Gare b.m.stokesley **
UK, Teesside and the North York Moors South Gare b.m.stokesley **
UK, Teesside and the North York Moors South Gare b.m.stokesley ****
UK, Farne Islands Colonies on Staple island mike421 **