Hooded Merganser - Ross Feldner

The Hooded Merganser has a really standout profile with its prominent crest, white and black on males and a rich cinnamon on females. It also sports a fairly unique bill that features serrated edges which helps it hold its often slippery and wiggling meals. Megansers are the only ducks that specialize in catching fish.

Their diet also consists of aquatic insects, fish, and crustaceans which are caught by sight under water. They have the ability to change the refractive properties of their eyes to improve their vision underwater.

Hooded Mergansers are generally found in river areas bounded by woods that support good fish populations associated with clear water.

Hooded Mergansers are tree cavity nesters and often lay their eggs in nests of other ducks, a behavior known as “brood parasitism.” Strangely, other cavity-nesting duck species also parasitize Hooded Merganser nests.

Their population has been in decline due to lost of nesting habitat requiring large older trees but they are making a comeback thanks to people putting up artificial nest boxes.

Hooded Merganser
Fun Facts

The genus name derives from the Greek language: lophos meaning "crest," and dutes meaning "diver."

Hooded Merganser ducklings leave their nest within day of hatching, scrambling out of the nest and fluttering to the ground. This leap of faith is often 50 feet or more!

They have a third “eyelid” that acts like a goggle to help them see prey underwater.

The Hooded Merganser is also called the “fish duck” and “frog ducks” because of their guttural call.

Males do a complex courtship display to impress females, fanning out their crest and make a croaking sound.

Its eggs are unusual in being almost spherical with disproportionately thick shells.

Hooded Mergansers can fly at speeds up to 50 mph.

Ducklings in the water may gather together in a tight compact group resembling a swimming muskrat. This instinctive behavior may deceive aerial predators like sharp-shinned hawks.

Click here to listen to why they are called “frog ducks.”

Click here to watch the chicks leap from the nest.

 

Rachel Carson Council
8600 Irvington Avenue  | Bethesda, Maryland 20817-3604
(301) 214-2400 | office@rachelcarsoncouncil.org

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