Sources and links :
Andean
condor at the Hannover zoo:
http://www2.zoo-hannover.de/zoo/uk/animals/condor.html
Raptors
at Design2Graphics
http://www.design2graphics.com/html/raptors/raptors.html
Andean
condor at Design2Graphics
http://www.design2graphics.com/html/raptors/andean_condor.html
The Hawk
Conservancy: Andean Condor
http://www.hawk-conservancy.org/priors/george.htm
Andean Condor
at the Cleveland Zoo
http://www.clemetzoo.com/rttw/condor/index.htm
Louis J. Halle, et al. The Wonders of Birds., Washington National Geographic
press, 1983, p. 244
Flight of the Condor by De-Roy-Tui, International Wildlife, v.30 no
3, May/June 2000. pp.12-19
