Brunnich’s Guillemot

https://www.allaboutbirds.org/guide/Thick-billed_Murre/id
Scientific: Uria lomvia
Thick-Billed Mur, also known as the Brunnich’s Guillemot.
Danish: Polarlomvie
Greenlandic : Appa
Order: Charadriiformes
Family: Alcidae
Genus: Uria
Length : 17.7 in (45 cm)
Weight : 26.5-52.2 oz (750-1481 g)
Description:
Medium-sized waterbird.
Black back and head, white underside.
Rather stout, pointed bill.
Throat white in non breeding plumage.
Thomas Sacher, XC112847. Accessible at www.xeno-canto.org/112847

References :
Avibase The World Bird Database (2018). Uria lomvia. found at https://avibase.bsc-eoc.org/species.jsp?avibaseid=B5AA5952E13FE5F3
Gaston, Anthony J. and J. Mark Hipfner. 2000. Thick-billed Murre (Uria lomvia), version 2.0. In The Birds of North America (P. G. Rodewald, editor). Cornell Lab of Ornithology, Ithaca, New York, USA.