Sunday, November 2, 2014

Turkey's eyes provide super vision

Experienced turkey hunters know that these impressive birds have incredible eyesight. You no sooner see a turkey approaching, and it's gone. And as trees are losing their leaves, the problem is exaggerated. Clearer lines of sight give an advantage to the turkey.

The retinas in turkey eyes have seven types of photo-receptors. They can detect movement at great distances. But it is one particular type of color-sensitive cone cell that gives turkeys almost super vision. These cone cells are sensitive to ultra-violet light, so they see things we don't.

Turkeys' sensitivity to UV light puts hunters at a disadvantage. Even if motionless, clothing can make a stationary hunter impossible to miss.

Read more here

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