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A long-bodied, low-slung diver. Many people consider the loon a symbol of wilderness; its rich yodeling and moaning calls, heard by day or night, are characteristic sounds of early summer in the north woods. In winter, silent and more subtly marked, Common Loons inhabit coastal waters and large southern lakes. In such places they are solitary while feeding, but may gather in loose flocks at night.

The Old World counterpart to our Pacific Loon, entering North America mainly as an uncommon summer resident in far western Alaska. The two are very similar, and until recently they were combined as one species under the name 'Arctic Loon.' The true Arctic Loon (of the form found in eastern Siberia and western Alaska) is larger than the Pacific Loon, but its habits are similar.

The smallest of its family, the Red-throated also breeds farther north than any other loon, reaching the northernmost coast of Greenland. It may nest at very small ponds, doing much of its feeding at larger lakes or coastal waters a few miles away. This species takes flight from the water more readily than other loons, often taking off without a running start; unlike the others, it is also able to take off from land.

This loon is hardly 'Pacific' in summer -- its breeding range extends across northern Canada as far east as Hudson Bay and Baffin Island. However, the great majority of these birds head west to the Pacific Coast to spend the winter.

A big dagger-billed diving bird of wilderness waters. Closely related to Common Loon but even larger (the largest member of the family) and more northerly. Summers on high Arctic tundra, winters off wild northern shores, and occurs only in very small numbers south of Canada. Its great size, remote range, and general rarity give the Yellow-billed Loon an aura of mystery for many birders.