RE: Deer cannot see orange.
Deer need to have 2 out of3 senses to be spooked. They either have to hear and see, see and smell or hear and smell something before they spook. I have been spotted wearing camo and not been spotted wearing orange, but if the wind is blowing at them and I move, they are gone. If I step on a stick and they see me, gone. But if there is only one of those sense used, they will stick around until another one spooks them away or they just continue what they were doing.