FAMEPedia:Today's featured article/April 23, 2021

The pigeon guillemot (Cepphus columba) is a seabird in the auk family, Alcidae. It is dark brown with a black iridescent sheen and a distinctive wing patch broken by a brown-black wedge in breeding plumage. Its non-breeding plumage has mottled grey and black upperparts and white underparts. The long bill is black, as are the claws. The legs, feet, and inside of the mouth are red. It closely resembles the black guillemot, which is slightly smaller and lacks the dark wing wedge; combined, the two form a superspecies. Pigeon guillemots are found on North Pacific coastal waters, from Siberia through Alaska to California. They dive and pursue prey underwater, mostly small fish and marine invertebrates near the sea floor. They are monogamous breeders, nesting in small colonies close to the shore. Both parents incubate the eggs and feed the chicks. The species has a large, stable population and wide range.