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The most widespread grebe in the New World, and the most familiar in most temperate parts of North America. Far less sociable than most grebes, almost never in flocks, sometimes found singly on small marshy ponds. When disturbed or suspicious, it may sink slowly until only head is above water. Rarely seen in flight. Often secretive in the breeding season, hiding in marsh, making bizarre whinnying, gobbling, cooing noises by day or night.

Western Grebes are highly gregarious at all seasons, nesting in colonies and wintering in flocks. Their thin, reedy calls are characteristic sounds of western marshes in summer.

A small diver found mostly on northern marshes in summer, coastal bays in winter. Also widespread in Eurasia, where it is called Slavonian Grebe. Similar to Eared Grebe, but much less gregarious, it seldom nests in colonies and seldom gathers in large flocks at other seasons. Like other grebes, it must patter across surface of water to become airborne; may become trapped when waters freeze quickly overnight.

A large grebe of northern marshes and coasts. Not especially wary when not molested by humans; nests on park lakes in some cities, such as Anchorage, Alaska. Colorful, noisy, and conspicuous on its nesting territory, it seems a different bird in winter, when it is gray and silent, a solitary bird of offshore waters. Rather clumsy in takeoff, and not often seen flying except in migration.

A common grebe of freshwater lakes in the west. Gregarious at all seasons; nests in dense colonies, sometimes congregates in huge numbers on lakes during migration and winter. Probably as an adaptation to life in the arid west, it is flexible in distribution, quickly taking advantage of temporary or man-made new bodies of water.

Described to science in 1858, Clark's Grebe was soon dismissed as a mere variant of Western Grebe, and thereafter was ignored for over a century. Studies in the 1970s and 1980s showed that Western and Clark's, though extremely similar, are actually two distinct species. Minor differences in face pattern, bill color, and voice seem to be enough to prevent the two from interbreeding most of the time, even where they nest in mixed colonies. Apparent hybrids have been found, but they are a minority of the population. Although Clark's may be found with Western Grebes at all seasons, it tends to associate more with its own kind. In almost all aspects of behavior that have been studied, Clark's Grebe seems identical to Western Grebe. In one study on lakes in Oregon, Clark's tended to feed farther from shore and in deeper water.

A tiny diver of the American tropics, entering our area mainly in southern Texas. Seems to fly more readily than most grebes, and may colonize temporary ponds or flooded areas shortly after they form. Often seen swimming and diving on small ponds or ditches in pursuit of aquatic insects, its main food. Sometimes the Least Grebe hides in dense marshes, where its presence may be revealed by metallic trilling calls, often given as a duet by members of a mated pair.