Pacific Diver (Gavia pacifica †), known in North America as Pacific Loon, is a medium-sized member of the loon or diver family.
Breeding adults are like a smaller sleeker version of Great Northern Diver. They have a grey head, black throat, white underparts and chequered black-and-white mantle. Non-breeding plumage is drabber with the chin and foreneck white. Its bill is grey or whitish and dagger-shaped. In all plumages, lack of a white flank patch distinguishes this species from the otherwise very similar Black-throated Diver
This species, like all divers, is a specialist fish-eater, catching its prey underwater.It fies with neck outstretched.
The call is an a yodelling high-pitched wailing.
† Gavia: Latin for sea smew (although Divers are not Smew); pacifica: Latin, meaning of the Pacific.