Alca (bird)

Alca is a genus of charadriiform bird that contains a single extant species, the razorbill (Alca torda). Many fossil species are known, the oldest dating back to the Miocene. The genus appears to have always been restricted to the North Atlantic.^[1]

Alca Temporal range: Miocene - Recent
Razorbill (Alca torda)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Charadriiformes
Family:	Alcidae
Tribe:	Alcini
Genus:	Alca Linnaeus, 1758
Species
Alca torda †Alca ausonia †Alca carolinensis †Alca grandis †Alca minor †Alca olsoni †Alca stewarti

References

1. Smith, N.A.; Clarke, J.A. (2011). "An Alphataxonomic Revision of Extinct and Extant Razorbills (Aves, Alcidae): A Combined Morphometric and Phylogenetic Approach". Ornithological Monographs. 72: 1–61. doi:10.1525/om.2011.72.1.1.