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Red-breasted Merganser (Mergus serrator)    Ducks, Geese and Waterfowl (Anatidae)
Toppet Skallesluger    Mergo Copetón
Red-breasted Merganser 1451    (1 photos)
2010-11-04    Puerto Peñasco (son), Mexico

Adult male still in eclipse plumage.


Red-breasted Merganser 1452    (1 photos)
2010-11-04    Puerto Peñasco (son), Mexico

Eclipse plumage. 2 males most to the right and 1 most to the left. The others are females. Bad picture I know.


Red-breasted Merganser 1450    (1 photos)
2010-11-09    Estero Punta Banda (bcn), Mexico

Adult female. The red bill and the gray back and flank indicate old female.


Red-breasted Merganser 1448    (1 photos)
2011-05-10    Kalvebod Fælled, Denmark

Adult male and female. A pair in breeding plumage. Male in breeding plumage is unmistakable, and the female is best separated from Common Merganser by the diffuse transition of color from neck to breast.


Red-breasted Merganser 1449    (1 photos)
2011-06-10    Kalvebod Fælled, Denmark

Adult male entering eclipse plumage. The male always shows a broad three-part white patch on the wing, compared to the narrower two-part patch shown by the female.


Red-breasted Merganser 1453    (1 photos)
2012-06-02    Kalvebod Fælled, Denmark

Male and female in eclipse plumage. Notice the difference in wing pattern. The male to the left.


Red-breasted Merganser 3897    (1 photos)
2022-01-05    Dragør Havn, Denmark

Adult. Male.


Red-breasted Merganser 3896    (1 photos)
2022-01-05    Dragør Havn, Denmark

Adult. Female. Assuming it is an adult female because it was with the male in 3897.

I'm not sure if you can identify a young bird at this time and by a photo like this.



Red-breasted Merganser 4091    (2 photos)
2022-05-21    Kalvebod Fælled, Denmark

Male and female. Probably a pair that gave up breeding this year, the male already transcending to eclipse plumage. The female too, perhaps...


Red-breasted Merganser 4695    (4 photos)
2022-12-26    Dragør Havn, Denmark

Adult. Male.
A pair foraging in the harbor. With 4696.



Red-breasted Merganser 4696    (3 photos)
2022-12-26    Dragør Havn, Denmark

Adult. Female.
A pair foraging in the harbor. With 4695.



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