Sabine's gull treated as comprising a monotypic genus; it is only placed within the genus "Larus" when the genus is enlarged. The black bill and notched tail are almost unique within the gulls, as they are shared only with the swallow-tailed gull of the Galapagos. On the basis of this the two species were often thought to be each other's closest relatives, a hypothesis ruled out by a number of behaviour and ecological differences. Mitochondrial DNA studies confirmed that they are not closely related, and the closest relative of the Sabine's gull is now thought to be the ivory gull, another Arctic
Bluenose Lake ground squirrel, Arctic hare, Back's lemming, barren-ground grizzly bear, collared lemming, muskox, short-tailed weasel, tundra vole, and wolf. Birds that frequent the area include Arctic loon, Arctic tern, Baird's sandpiper, black-bellied plover, buff-breasted sandpiper, Canada goose, glaucous gull, golden eagle, golden plover, herring gull, king eider, Lapland longspur, long-tailed jaeger, mallard, northern phalarope, oldsquaw, parasitic jaeger, pectoral sandpiper, pintail, raven, red-breasted merganser, red-throated loon, rough-legged hawk, sanderling, semipalmated sandpiper, short-eared owl, snow bunting, snowy owl, tree sparrow, water pipit, whistling swan, willow ptarmigan, and yellow-billed loon. Bluenose Lake Bluenose Lake is a lake in Kitikmeot Region, Nunavut, Canada. It is