Breeding adult © Christian Hagenlocher eBird S70735434 Macaulay Library ML 245172211
Nonbreeding adult/immature © Marky Mutchler
Nonbreeding adult/immature © Brian Sullivan
Immature © Martine Stolk
Breeding adult © Jay McGowan
+ 6
Molting adult © Mike Cameron
Breeding adult and juvenile © Julie Filiberti
Breeding adult © Brian Collins
Nonbreeding adult/immature © Jay McGowan
Habitat © Peter Hawrylyshyn

Common Loon Gavia immer

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A large, heavy-billed loon. Common and widespread in North America; somewhat less common and more local in Europe. Breeding adults have gorgeous black-and-white patterning; especially note fully black head with iridescent sheen and boldly checkered back. Nonbreeding plumage is plainer gray above and white below; note the jagged border between gray and white on the neck. Heavy bill is usually held straight (compare with Yellow-billed Loon). Breeds on lakes and ponds in the boreal forest. Listen for their haunting, yodeling vocalizations. In winter, mostly found on nearshore ocean waters and sheltered bays, singly or in loose flocks.