willow ptarmigan

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Related to willow ptarmigans: Lagopus lagopus

willow ptarmigan

n.
A ptarmigan (Lagopus lagopus) of Arctic regions, having brownish plumage that turns white in winter. Also called willow grouse.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.