Sea Duck Joint Venture

A Conservation Partnership under the North American Waterfowl Management Plan

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

Mission

The SDJV promotes the conservation of all North American sea ducks through partnerships by providing greater knowledge and understanding for effective management.

E-Newsletter Signup