- Mergus serrator
L. 52-58 cm (20½-22¾ in)
W. 67-82 cm Long, thin red bill with serrated edges
- Dark head with a green sheen
- White neck with
- Rusty breast
- Black back
- White underparts
- Rusty head
- Greyish body
Juvenile Like the female, but lacks the white collar and has a smaller white wing patch.
Northern Palearctic and northern North America; winters southern Palearctic and Mexico
This is a monotypic species.
Freshwater lakes and rivers.
This is a diving duck.
The diet is mainly small fresh and salt water fish, aquatic crustaceans and invertebrates. Also insects, worms and frogs.
The call of the female is prak prrak
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2017. The eBird/Clements checklist of birds of the world: v2017, with updates to August 2017. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Handbook of the Birds of the World Alive (retrieved July 2018)
- BirdForum Opus contributors. (2023) Red-breasted Merganser. In: BirdForum, the forum for wild birds and birding. Retrieved 9 June 2023 from https://www.birdforum.net/opus/Red-breasted_Merganser
GSearch checked for 2020 platform.