Thread: Not getting shot or shooting someone by mistake

Red, green, orange and yellow appear as shades of grey to deer.

Not so. Deer see green and blue but not red. Pink is blue and red so it will stick out like a beacon to a deer - not sure that matters. Red appears green to deer as does orange and yellow. That's the thing, they cannot distinguish between red, green, yellow and orange. It's all green to them. Red would be darker as they see it with their green cones which are less sensitive to red. Beyond 625 nm red they can't see at all. We can see beyond 650 nm. Deer see blue very well - in fact, they see ultraviolet (as blue). But deer do not see in shades of grey. They have the same ratio of cones and rods in their 'central vision' as we have in out near peripheral vision and more colour cones than we have in a extreme peripheral vision yet we see colour perfectly well. Deer perceive things pretty much the same as a colour blind person would (red blind) but without the acuity we have.

This is something like how a deer would see a blaze orange top.