The Male Hooded Merganser has a Black head with a large crest, mostly held down. The sides of it's head have a White flash behind a bright Yellow eye. The breast is White with vertical Black bands up either side and it's flanks are a light Rufous-ochre colour.
*Black & White breast
*White edged tertials
Grey-brown flanks, paler breast
*Large rusty Brown crest
The Female Hooded Merganser has a large rust-Brown crest which it frequently moves up and down. It's flanks are Grey-brown and it's back is Black with White edged tertial feathers.