hollyParticipantChirps: 24I've mentioned this B-4, but when you're outside you always look around & listen; however, it's always important to look up. As a student glider pilot I learned to keep an eye out for birds that thermals to show me where there was lift. The hawks [& even the vultures] will allow a sailplane pilot to follow & stay aloft. Pilots learn about birds, the clouds & weather. Human eyes see 3 primary colors; from a nature show [didn't see the entire episode] I heard that hawks see 5 primary colors which aids them in finding their prey among its background that humans do not perceive. Can anybody elaborate?You must be enrolled in the course to reply to this topic.
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