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/nbnhttp://www.nhm.ac.uk/nbn External link.
  • 2. Mullarney, K., Svensson, L., Zetterström, D. and Grant, P.J. (1999) Collins Bird Guide. HarperCollins Publishers Ltd, London.
  • 2006. website, Zoonomen - Zoological Nomenclature Resource, 2006.12.10
  • 3. RSPB A-Z of Birds: Bewick's swan (February, 2004) http://www.rspb.org.uk/birds/guide/b/bewicksswan/index.asphttp://www.rspb.org.uk/birds/guide/b/bewicksswan/index.asp External link.
  • 4. JNCC Special Protection Areas for Bewick's swan (February, 2004) http://www.jncc.gov.uk/UKSPA/Species/accounts/A6-15.pdfhttp://www.jncc.gov.uk/UKSPA/Species/accounts/A6-15.pdf External link.
  • 5. Greenoak, F. (1979) All the birds of the air. Book Club Associates, London.
  • 6. Holden, P. and Sharrock, J.T.R. (2002) The RSPB Guide to British Birds. Pan Macmillan, London.
  • 7. Lack, P. (1986) The Atlas of wintering birds in Britain and Ireland. T & A D Poyser Ltd, London.
  • Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2014. The eBird/Clements checklist of birds of the world: Version 6.9. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  • Orrell T. (custodian) (2013). ITIS Global: The Integrated Taxonomic Information System (version Sept 12). In: Species 2000 & ITIS Catalogue of Life, 11th March 2013 (Roskov Y., Kunze T., Paglinawan L., Orrell T., Nicolson D., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Hernandez F., De Wever A., eds). Digital resource at www.catalogueoflife.org/col/. Species 2000: Reading, UK.

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!