Green-cheeked Amazon  (Amazona viridigenalis)

Monogamous: Mating with a single partner.
Naturalised: Term used to describe a species that was originally introduced from another country, but becomes established and maintains itself.
Primaries: In birds, the outer flight feathers.

1. IUCN Red List (November, 2004)
   http://www.redlist.org
   
2. The Furry Critter Network (November, 2004)
   http://www.furrycritter.com/resources/birds/Amazon_Green-Cheeked.htm
   
3. A Refuge for Saving the Wildlife (November, 2004)
   http://www.rescuethebirds.org/Bird%20Pages/Bird%20Descriptions/Mexican%20Red%20Head%20Amazon.html
   
4. CITES (November, 2004)
   http://www.cites.org
   
5. Audubon (November, 2004)
   http://audubon2.org/webapp/watchlist/viewSpecies.jsp?id=170
   
6. Aberdeen University Natural History Centre (November, 2004)
   http://www.abdn.ac.uk/~nhi708/classify/animalia/chordata/aves/psittaciformes/psittaciformes.html
   
7. Avian Network (November, 2004)
   http://www.aviannetwork.com/amazons/
   
8. The California Parrot Project (November, 2004)
   http://natureali.org/parrot_project/redcrowned_parrot.htm
   
9. Liberec Zoo (November, 2004)
   http://www.zooliberec.cz/zooliberec/English/Chovane_druhy/Ptaci/Amazonan_zelenolici/popis.html
   
10. BirdLife International (November, 2004)
    http://www.birdlife.org/datazone/search/species_search.html?action=SpcHTMDetails.asp&sid=1669&m=0