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

References

  • 1. UNEP-WCMC (November 2001) www.unep-wcmc.org
  • 2. Peterson, R.T., Mountfort, G., Hollom. (1993) Collins Field Guide. Birds of Britain and Europe. Harper Collins, London.
  • 3. RSPB (November 2001) http://www.rspb.org.uk
  • 4. UK Biodiversity (November 2001) http://www.ukbap.org.uk/
  • Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes. 2003. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
  • Banks, R. C., R. W. McDiarmid, and A. L. Gardner. 1987. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada. Resource Publication, no. 166. 79
  • BirdLife International 2009. Pyrrhula pyrrhula
  • Burton M. and Burton R. 1980. The New Funk and Wagnalls Illustrated Wildlife Encyclopedia, Volume II. BPC Publishing Ltd.
  • Gill, Frank, and Minturn Wright. 2006. Birds of the World: Recommended English Names. ix + 259
  • Heinzel, H. 1972. The Birds of Britain and Europe. William Collins Sons and Co. Ltd. London.
  • Moller (2006) Sociality, age at first reproduction and senescence: comparative analyses of birds. J Evol Biol, 19:682-689.

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!