Dusky Grouse vs Sooty Grouse

Dusky Grouse

Dendragapus obscurus

Large1.0 kgForest

Adults have a long square tail, gray at the end. Adult males are mainly dark with a purplish throat air sac surrounded by white, and a yellow to red wattle over the eye during display. Adult females are mottled brown with dark brown and white marks on the underparts. Males are larger than females, with a male mean body mass of 1.21 kg (2.67 lbs.) compared to a mean 0.91 kg (2.01 lbs.) in females.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Jeli · Public domain

Sooty Grouse

Dendragapus fuliginosus

Large1.0 kgForest

Adults have a long square tail, light gray at the end. Adult males are mainly dark with a yellow throat air sac surrounded by white, and a yellow wattle over the eye during display. Adult females are mottled brown with dark brown and white marks on the underparts. Females have longer skinnier necks than males. The males have stouter bodies than the females. The bird averages 40–50 cm (16–20 in) in length and weighs 750–1,300 g (1.65–2.87 lb).

ID text from Wikipedia, CC BY-SA 4.0

Photo: LassenNPS · Public domain

Photos and recordings are credited to their authors under the licence shown. Full profiles: Dusky Grouse and Sooty Grouse.