Whooping crane  (Grus americana)

Monogamous: Having only one mate during a breeding season, or throughout the breeding life of a pair.
Omnivorous: Feeding on both plants and animals.
Territory: Area occupied and defended by an animal, a pair of animals or a colony.

1. IUCN Red List (April, 2008)
   http://www.iucnredlist.org
   
2. BirdLife International (April, 2003)
   http://www.birdlife.org/datazone/search/species_search.html?action=SpcHTMDetails.asp&sid=2796&m=0
   
3. CITES (April, 2003)
   http://www.cites.org
   
4. Global Register of Migratory Species (April, 2008)
   http://www.groms.de/
   
5. Hinterland Who's Who - Canadian Wildlife Service (November, 2003)
   http://www.hww.ca/hww2.asp?pid=1&id=79&cid=7
   
6. Travsky, A. and Beauvais, G.P. (2004) Species Assessment for the Whooping Crane (Grus Americana) in Wyoming. Bureau of Land Management, Wyoming, USA.
   
7. International Crane Foundation (April, 2008)
   http://www.savingcranes.org/species/whooping.cfm
   
8. Texas Parks and Wildlife (April, 2008)
   http://www.tpwd.state.tx.us/huntwild/wild/species/whooper/
   
9. Whooping Crane Eastern Partnership (November, 2003)
   http://www.bringbackthecranes.org/index.html
   
10. The Cranes Status Survey and Conservation Action Plan: Whooping Crane (Grus americana) (April, 2008)
    http://www.npwrc.usgs.gov/resource/birds/cranes/grusamer.htm
    
11. Whooping Crane Conservation Association (April, 2003)
    http://www.whoopingcrane.com/index.html