Very rare in pelagic waters and on large inland lakes, and along coast in summer. Eats mainly fish, but also crustaceans, leeches, snails, aquatic insects, other invertebrates, and even moss. Rarely comes ashore except when breeding. Take-off does not require as much water surface as other loons. Nest sites commonly on shore near water, on an island, or sometimes on water.
Small ponds are preferred, but larger lakes or calm rivers also used.
Nests found both near the coast and far inland, in both treeless and forested habitats. No additional data found. No additional data found. Yearlong, diurnal activity. Nonterritorial in winter.