Ross’s Gull

http://nibirding.blogspot.com/2012/02/rosss-gull-refound-lagan-weir.html
Scientific:
Rhodostethia rosea
Order:
Charadriiformes
Family:
Laridae
Genus:
Rhodostethia
Danish: Rosenmåge
Greenlandic: Naajannguaq
Weight: 4.9-8.8 oz (140-250 g)
Wingspan: 35.4-39.4 in (90-100 cm)
Rob van Bemmelen, XC401732. Accessible at www.xeno-canto.org/401732

References:
Avibase Worlds Bird Database (2018) Rhodostethia rosea. Found at https://avibase.bsc-eoc.org/species.jsp?lang=EN&avibaseid=4CD353D243C27F86
Olsen, K. M.; Larsson, H. 2004. Gulls of Europe, Asia and North America. Christopher Helm, London.
Sibley, David Allen. 2014. The Sibley guide to birds, second edition. Alfred A Knopf, New York.