Fall colors probably confuse the detection of green into yellow leaves. Fabric brighteners in detergent are responsible for changing camo clothes into bright blue luminescence and some cheap imported materials already appear bright blue to deer.

Miller and Gerald Jacobs from University of California Santa Barbara researched deer’s reaction to light at various wavelengths and found the red-green blindness (they see red taillights as black). Orange is invisible to them. Leonard Lee Rue III says in his book “The Deer of North America” said that deer vision is geared to detect motion. Their most important sense is smell. Kurt VerCauteren and Michael Pipas at the University of Nebraska (2003) say that the short rods and cones give deer better visual acuity in bright light in the range of blue to yellow, whereas at night they see only blue as a color. Visual capabilities are determined by the rods and cones proportion in the retinas. Humans and monkeys have 3 types of cones while deer have only 2 types, this results in poor depth perception.

Several products such as: Atsko sportwash is said to remove the whiteners in camo, UV killers absorbs the UV energy in clothes so they don’t look blue. Baking Soda is the old timer’s detergent that doesn’t brighten the camo and eliminates scent. Use a black light to check your clothes for brightness.

Deer vision is not as good as a human during the daytime, but better than us at night. They prefer running at night with a full moon, but with no moon will stay still. If there is no moon or a real dark night, deer are more likely to move at dawn and dusk, but if they are running all night, they are sleeping at dawn. Usually mid day has the nocturnal deer moving again.

Most animals and birds do not move in wind. For the deer, they can’t hear where sound is coming from in wind. The scent glands get very confused in wind.   So they hunker down in the wind.   Dogs can’t hunt as well and some can’t hunt at all in wind.