Male differs from Capercaillie in smaller size, stockier build, curled outer tail-feathers and pure white under tail-coverts. Both sexes with white wing bars. Female more evenly speckled than Capercaillie, lacking brick coloured patches on breast an neck. Much less noisy when flushed than Capercaillie.

Song: a far reaching, continuous, bubbly cooing, occasionally interrupted by a hissing "chooo-eee". Female calls with a nasal "go-go-go-gooo", ending on a falling drawn-out note.

Song:

Wikipedia: map (se also Xeno-canto below)

Birdlife ecology

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

Featherbase

CC-sound:Terje Kolaas, Licence,Link.