Feeding Behavior

Unlike any other sandpipers, phalaropes forage mostly while swimming, by picking items from water's surface or just below it. Often they spin in circles on shallow water, probably to stir things up and bring food closer to surface. In general, they feed very rapidly on very small prey. At sea, may land on mats of floating seaweed, and may pick parasites from backs of whales. On breeding grounds, also forages while walking or wading, and flutters up to catch insects in the air.

Eggs

4, sometimes 2-3. Olive to buff, blotched with black or dark brown. Sometimes 2 females lay eggs in one nest. Incubation is by male only, 18-20 days. Young: Downy young leave nest within a day after hatching; male leads them to edge of nearby pond. Young are tended by male (rarely joined by female) but mostly feed themselves. Male may remain with young until they can fly, or may abandon them after just a few days; abandoned young can care for themselves. Age at first flight about 16-18 days.

Young

Downy young leave nest within a day after hatching; male leads them to edge of nearby pond. Young are tended by male (rarely joined by female) but mostly feed themselves. Male may remain with young until they can fly, or may abandon them after just a few days; abandoned young can care for themselves. Age at first flight about 16-18 days.

Diet

Includes insects, mollusks, crustaceans. On tundra, eats many insects, especially aquatic ones; also small mollusks, crustaceans, worms, bits of plant material, rarely small fish. Diet in winter poorly known.

Nesting

In courtship, female flies in wide circle, calling. Female may chase male in the air, or pursues male on water, head hunched down between her shoulders. After leaving male to care for eggs, female will sometimes find a second mate and lay a second clutch of eggs. Nest site is on ground among low vegetation, usually near water. Nest is a shallow scrape lined with grass, lichens, moss. Both sexes make scrapes, female selects one, male adds nest lining.