Red-breasted Merganser (Mergus serrator)
Genus Mergus / Family Anatidae / Order Anseriformes / Class Aves / Phylum Chordata / Kingdom Animalia
A male Red-breasted Merganser displaying to a female in Monterey County, California (2/19/2020).

A male Red-breasted Merganser displaying to a female in Monterey County, California (2/19/2020).

A male Red-breasted Merganser displaying to a female in Monterey County, California (2/19/2020).

A female Red-breasted Merganser in Monterey County, California (2/19/2020).

A female Red-breasted Merganser in Monterey County, California (2/19/2020).

Red-breasted Mergansers in Anne Arundel Co., Maryland (11/5/2017).

Red-breasted Merganser in Monterey County, California (11/8/2020).

Red-breasted Merganser in Monterey County, California (11/28/2020).

Red-breasted Merganser in Worcester County, Maryland (1/6/2008).

Red-breasted Merganser in Worcester County, Maryland (1/6/2008).

Red-breasted Merganser in Monterey County, California (1/12/2021).
Red-breasted Merganser (Mergus serrator)
Genus Mergus / Family Anatidae / Order Anseriformes / Class Aves / Phylum Chordata / Kingdom AnimaliaTotal Records: 458
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United States - California (7) United States - Delaware (2) United States - Florida (1) United States - Illinois (1) United States - Maryland (438) United States - Massachusetts (3) United States - New Hampshire (1) United States - New Jersey (2) United States - North Carolina (1) United States - Washington (1)
Red-breasted Merganser (Mergus serrator) - Map
For now, here's a fun heat map representation of my personal sightings in iNaturalist courtesy of iNaturalist.