One of these two North American mystery bird species is out-of-range Pacific loon Gavia pacifica (formerly; Urinator pacificus & Gavia arctica pacifica) also known as the Pacific diver (foreground ...

Seabird of the month: Arctic Loon/Black-throated Diver (Gavia arctica) View more articles tagged as Europe and Central Asia View more articles tagged as Species . In breeding plumage, the adult of the ...