Smaller than Common Loon, with slightly thinner straight bill, often puffier look to head. Pacific Loon. Although superficially similar to Common Loon, nonbreeding plumaged Pacific Loon can be identified by the straight border on the neck between the dark and the light, the dark around eye, and the diagnostic chin strap (which is not always present nor easy to see). However, the Pacific has the black chinstrap, shorter neck, and is slightly smaller (the chinstrap may sometimes not be visible).The Common has a larger, flatter bill and a “collar” around the neck that the Pacific lacks. 25-26 in. Black-headed Grosbeak. English: Pacific Loon: Scientific (Gavia pacifica)Order: GAVIIFORMES: Family (Latin) Gaviidae: Family (English) Loons: Other name(s) Breeding Regions: NA, EU: Breeding Range Subregions In another case, a loon traveled distances of 360 and 505 miles during two consecutive days. The Pacific Loon and Common Loon in nonbreeding plumage look pretty similar at a glance. Red-throated Loon (nonbreeding in flight) - Goleta State Park, Santa Barbara County, California - April, 2011 Arctic Loon (breeding) - Gambell and Nome, Alaska - June, 2016 Pacific Loon (breeding) - Gambell, St. Lawrence Island, Alaska - May, 2016 Pacific Loon (nonbreeding) - Monterey, California - April, 2012 Pacific Loons are actually more common worldwide than Common Loons.
How far can common loons fly in one day? Pacific Loon usually shows a dark "chin strap," lacking in any other loon species, but this chin-strap may be nearly absent in some young birds (as in the bird in the photo above). Pacific Loon (Gavia pacifica) bird calls on dibird.com. Breeding Pacific Loons are dapper birds with soft gray heads and intricate black-and-white patterning on the back and neck. In one documented case, a loon traveled 670 miles within a 24-hr period. This is the most abundant of North America’s five loon species, and in winter they gather in large numbers in coastal waters, bays, and estuaries. Also, note overall dark head with a clearly demarcated white throat and short bill. Territories that have produced chicks in the past year are especially prone to takeovers, because nonbreeding loons use chicks as cues to indicate high-quality territories. The Pacific loon (Gavia pacifica) is the sister species of the black-throated loon (G. arctica). Winter nonbreeding plumage. In Washington, there are 20 confirmed Common Loon nesting locations, and 8-10 nests were found each year in the 1990s.
There are no records of the very similar Arctic Loon in Arizona. Breeding Pacific Loons are dapper birds with soft gray heads and intricate black-and-white patterning on the back and neck. It has a smoothly rounded head and neck and a straight bill. This is the most abundant of North America’s five loon species, and in winter they gather in large numbers in coastal waters, bays, and estuaries. Found in large numbers off the West Coast of North America in winter, when they are gray above and white below. Nonbreeding: Note sharp, straight separation of dark and white on neck. They are smaller than Common Loon with a shorter bill. This Grosbeak was high on Pinnacles Mountain in Pinnacles national park - hot and arid, although in February, so not yet that hot and arid! Back divided into four checkered patches. In breeding plumage, the top of the head and back of the neck are pale gray, lighter than the face.
It spends most of the year on the Pacific Ocean, returning to inland Arctic tundra lakes only for three months in summer to breed.
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