The breeding habitat is rocky shores and islands on the coasts of the northern Atlantic and Pacific Oceans. They usually lay their eggs in rocky sites near water.
These birds may overwinter in their breeding areas, moving to open waters if necessary, but usually not migrating very far south.
They dive for food from the surface, swimming underwater. They mainly eat fish and crustaceans, also some molluscs, insects and plant material.
The species are:
- Black Guillemot or Tystie, Cepphus grylle
- Pigeon Guillemot, Cepphus columba
- Spectacled Guillemot, Cepphus carbo
There are also fossil forms
- Cepphus olsoni (San Luis Rey River Late Miocene - Early Pliocene of W USA)
- Cepphus cf. columba (Lawrence Canyon Early Pliocene of W USA)
- Cepphus cf. grylle (San Diego Late Pliocene, W USA)
The latter two resemble the extant species, but because of the considerable distance in time or space from their current occurrence may represent distinct species.
Other articles related to "cepphus":
... torda Great Auk Pinguinus impennis Black Guillemot Cepphus grylle Pigeon Guillemot Cepphus columba Spectacled Guillemot Cepphus carbo Marbled Murrelet Brachyramphus ...
... torda Razorbill Pinguinus impennis Great Auk Cepphus grylle Black Guillemot Cepphus columba Pigeon Guillemot Cepphus carbo Spectacled Guillemot ...
... Black Guillemot or Tystie, Cepphus grylle Pigeon Guillemot, Cepphus columba Spectacled Guillemot, Cepphus carbo As in other genera of auks, fossils of prehistoric ... columba (Lawrence Canyon Early Pliocene of W USA) Cepphus cf ...