Red-breasted Merganser Mergus serrator

Red-breasted Merganser male
Red-breasted Merganser male
Red-breasted Merganser female
The Red-breasted Merganser breeds across much of the temperate northern hemisphere and winters in coastal fresh and salt water south of much of the breeding range.
Red-breasted Merganser male Male: breeding plumage
Red-breasted Merganser male Male: transition plumage
Red-breasted Merganser female Female
Red-breasted Merganser
Red-breasted Merganser
Red-breasted Merganser
The male has a red breast in his breeding plumage. The female is greyish with a red head, much like the female Goosander.
Red-breasted Merganser
Red-breasted Merganser
Red-breasted Merganser
In addition to diving well, the species holds the world record for fastest duck in flight (can fly at over 80 mph).
Red-breasted Merganser
Red-breasted Merganser
Red-breasted Merganser
Their thin, serrated bills are designed to hold on to slippery fish.