found: Work cat: Natural England. Great northern diver: species information for marine special protection area consultations, 2012.
found: Avibase website, 8 Jan. 2015(Common Loon, Gavia immer, Brunnich, 1764; Other synonyms: English: American common loon, Black-billed Diver, Black-billed Loon, Common Loon, Great Northern Diver, Great Northern Loon, lesser black-billed loon, Lesser Loon, Loon, Northern Loon, Polar Loon)
found: Integrated Taxonomic Information System website, 8 Jan. 2015database (species, Gavia immer, Brunnich, 1764;Taxonomic status: valid)
found: Wikipedia, 8 Jan. 2015under Great northern loon (The great northern loon, Gavia immer, is a large member of the loon, or diver, family of birds; the species is known as the common loon in North America and the great northern diver in Eurasia)
