Sea Duck Joint Venture

A Conservation Partnership under the North American Waterfowl Management Plan

Sea Duck Joint Venture

Sea Duck Joint Venture

Red-breasted Merganser

Mergus serrator

The red-breasted merganser is a medium-sized “saw-bill” sea duck. An adult weighs 800–1,350 grams (1.7–3.0 lbs) and is 51–64 cm (20.0–25.1 in.) long. Males are larger than females. Both sexes have a long narrow red bill with a black tip, red-orange feet, and black wings with white patches across the inner wing. Their serrated bill is highly specialized for grasping small fish securely.

Sea Duck Information Series fact sheet

Red-breasted Merganser Species Knowledge Summary and Information Needs [PDF]

Aerial Identification video

Red-breasted Merganser Photo Gallery

Red-breasted Merganser Range Map

RBMErange_300_3x5

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Mission

The Sea Duck Joint Venture promotes the conservation of all North American sea ducks through partnerships by providing greater knowledge and understanding for effective population and habitat conservation and management.