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Field Trip: Birds of Prey and Raptor Facts

Ologies with Alie Ward

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The Effects of Light on Vision in Animals

One way researchers evaluate visual acuity in animals is with this measurement called cycles per degree. The highest number of cycles per degree able to be distinguished is how they can get an idea of just how sharp an animal's vision is. And humans threshold is right at 60 cycles per degree, Whereas falcons threshold is 160. However, that great eyesight, don't be too jealous because it's really dependent on luminance. When the lights go out, they lose visual acuity very quickly.

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