ptarmigan : Idioms & Phrases
Rock ptarmigan
(Zoöl.) , an arctic American ptarmigan (Lagopus rupestris ), which in winter is white, with the tail and lores black. In summer the males are grayish brown, coarsely vermiculated with black, and have black patches on the back.
Webster 1913
Willow ptarmigan
(Zoöl.) (a) The European reed bunting, or black-headed bunting. See underReed .(b) A sparrow (Passer salicicolus ) native of Asia, Africa, and Southern Europe.