Black Brant

There seem to be two separate brants at Alftanes currently, one is much paler than the other but a little bit of research suggests both seem to be black brants (Branta bernicla nigricans), birds that should be migrating up and down the Pacific flyway in North America rather than in Iceland with our geese! Some digiscoped pics below:

Note the very full, joined-up collar, very dark breast and back and clean white flanks. This is the paler of the two birds - the other is more impressive still!