Guide to North American Birds
Conservation status Thought to have declined in recent decades, although solid data are mostly lacking.
Family Grebes
Habitat Lakes, ponds; coastal waters. Summers on lakes having both open water and marsh vegetation, surrounded by northern forest, prairie, sometimes out onto southern edges of tundra. Winters mainly on ocean, including protected bays and exposed shores. Also some in winter on large lakes and reservoirs, more commonly so in recent years.
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.

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Feeding Behavior

Forages by diving from surface and swimming underwater, propelled by feet. Also takes items from on or above water's surface. Usually solitary in feeding, but flocks may rarely forage cooperatively; has been seen foraging in association with Surf Scoters.


Eggs

4-6, sometimes 3-7. Whitish to very pale green or buff, becoming nest-stained. Both sexes incubate, 22-25 days. Young: Can swim shortly after hatching; fed by both parents, and often ride on parents' backs. Age at first flight 55-60 days. One brood per year, sometimes 2; young from first brood may help in feeding of second.


Young

Can swim shortly after hatching; fed by both parents, and often ride on parents' backs. Age at first flight 55-60 days. One brood per year, sometimes 2; young from first brood may help in feeding of second.

Diet

Mostly insects, crustaceans, fish. Diet varies with habitat and season. In summer may eat mainly insects and crustaceans, also some fish, tadpoles, leeches, salamanders, small amounts of plant material. May eat mostly fish in winter, also crustaceans, mollusks, insects. Like other grebes, also swallows many feathers.


Nesting

Courtship displays involve posturing by both members of pair; both rise to vertical position on water with head feathers fully raised, turning heads rapidly; both dive and come up with bits of weed in bills, then rush across surface of water side by side carrying weeds. Nest: Site is in shallow water, usually among marsh growth. Nest (built by both sexes) a floating heap of wet plant material (with depression in middle for eggs), usually anchored to standing vegetation.

Illustration © David Allen Sibley.
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Text © Kenn Kaufman, adapted from
Lives of North American Birds

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Migration

Usually migrates singly. May migrate by day along coast, usually at night over land. A change in overall winter range detected in recent years, with more and more wintering on man-made reservoirs in the southeastern states.

  • All Seasons - Common
  • All Seasons - Uncommon
  • Breeding - Common
  • Breeding - Uncommon
  • Winter - Common
  • Winter - Uncommon
  • Migration - Common
  • Migration - Uncommon

See a fully interactive migration map for this species on the Bird Migration Explorer.

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Songs and Calls

Usually silent. On breeding grounds a variety of croaks, shrieks, and chatters.
Audio © Lang Elliott, Bob McGuire, Kevin Colver, Martyn Stewart and others.
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