The term hawk refers to birds of prey in any of three senses:
In February 2005 the Canadian scientist Dr. Louis Lefebvre
announced a method of measuring avian IQ in terms of their
innovation in feeding habits. Hawks were named among the most
intelligent birds based on this scale.
Hawks are believed to have vision as good as 20/2, about eight times more acute than humans with good eyesight. This is because of many photoreceptors in the retina (Up to 1,000,000 per square mm, against 200,000 for humans), a very high number of nerves connecting the receptors to the brain, a second set of eye muscles not found in other animals, and an indented fovea, which magnifies the central part of the visual field.
Hawks are sometimes used in falconry, a sport in which trained hawks, eagles or falcons, are used to pursue and catch small game. In the US, hawks are sometimes shot for sport or by ranchers who believe the birds may depredate livestock. This makes hawk conservation an issue in some areas. In other parts of the world, most hawk species are protected by law
This Hawk Page is Copyright The Animal Web Guide © 2004 - 2009 Chuck Ayoub