Deadline set for decision on North Cascades bird | Environment | goskagit.com The Mount Rainier white-tailed ptarmigan is a plump white and brown bird in the grouse family. Read More at Source. Author: Pumilo Share this:TwitterFacebookMoreLinkedInRedditTumblrPinterestPocketTelegramWhatsAppLike this:Like Loading... Related Tags: BirdNews May 8, 2024 by Pumilo Bird News 0