Black Guillemot

Cepphus grylle

'Guillemot' probably comes from Guillaume, the French form of William, so this seabird is basically 'Little Billy.' The robin got its name the same way, from Robert.

Cepphus comes from a Greek name for a pale waterbird; grylle comes from a Swedish dialect name. 'Guillemot' may also imitate the begging calls of the chicks.