The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

• 1. National Biodiversity Network Species Dictionary (January 2004) http://www.nhm.ac.uk/nbn
• 2. Mullarney, K., Svensson, L., Zetterström, D. & Grant, P.J. (1999) Collins Bird Guide. HarperCollins Publishers Ltd, London.
• 3. RSPB A-Z of Birds: Ptarmigan (February 2004) http://www.rspb.org.uk/birds/guide/p/ptarmigan/index.asp
• 4. Lack. P. (1986) The Atlas of wintering birds in Britain and Ireland. T & A D Poyser Ltd, London.
• 5. Animal Diversity Web (February 2004) http://animaldiversity.ummz.umich.edu/accounts/lagopus/l._mutus$narrative.html
• 6. Holden, P. & Sharrock, J.T.R. (2002) The RSPB Guide to British Birds. Pan Macmillan, London.
• BirdLife International 2009. Lagopus muta
• Dickinson, Edward C., ed. 2003. The Howard and Moore Complete Checklist of the Birds of the World, 3rd edition. 1039
• EURING list of longevity records for European birds (Online source)
• Gill, Frank, and Minturn Wright. 2006. Birds of the World: Recommended English Names. ix + 259
• Hays, Hank. 1998. "Rock Ptarmigan image" (On-line). Available http://www.paddles.com/users/nbl/nblimg/ptarmb.html (July 31, 2002).
• Johnsgard, Paul A. 1973. Grouse and Quails of North America. University of Nebraska, Lincoln.
• Kaufman, Kenn. 1996. Lives of North American Birds. Houghton Mifflin Company, Boston.
• Ochi, Shinji. 1997. http://www2.marinet.or.jp/~ochi/eng/content.html
• Weeden, Robert B. 1995. http://www.state.ak.us/adfg/notebook/bird/ptarmiga.htm