- 20.1–25.2 in
- 26–29.1 in
- 28.2–47.6 oz
- Harle huppé (French)
- Mergo copetón (Spanish)
- The Red-breasted Merganser breeds farther north and winters farther south than the other American mergansers.
Mostly fish; also crustaceans, insects, and tadpoles.
- Egg Description
- Condition at Hatching
- Covered with down, eyes open. Leave nest within one or two days after hatching.
Depression in ground, lined with down. Often placed under boulder or in dense shrubs.
Dives underwater to catch prey.
- Titman, R. D. 1999. Red-breasted Merganser (Mergus serrator). In The Birds of North America, No. 443 (A. Poole and F. Gill, eds.). The Birds of North America, Inc., Philadelphia, PA.