I have read that they can see the color blue. But I agree they see movement at 1 mile easily. Maybe not color so much, but movement yes.
so what if they see the color blue.....i hear this argument for alot of critters we hunt.....here is a question, just what in there environment that is blue is a danger to them? i know of no blue predators......
as to what they will and will not do, the herd my wife and i usually hunt is on public ground, hang out in a big flat kinda surrounded by hills on more or less three sides east, west and north but the east side is alot shorter than the west....few weeks into the season they will spook and run at a pickup stopping let alone someone getting out and they will start running with you a mile away at times....
last day of the season a few years ago is when i finally convinced my wife you can walk up on goats "playing cow"....situation was right with the herd bunched up against the east side of the west lil ridge, we snuck down the west side of the ridge until we were about 500 yards north of the group and popped through a saddle walking parallel to them so they could get a damn good look, my wife was walking in front of me, bent at the waist at about a 45* angle, i was walking behind her, hands holding her belt head in the small of her back so we looked like some sorta 4 legged critter out walking...
we zig-zagged to eat up ground trying to keep our sides to them as much as possible every once in awhile we would stop and my wife would lean over to sorta touch her toes so we looked like some sort of mutant horse feeding.....the whole time the goats just sat and watched us, occasionally taking a few steps closer....
bout 200 yards a way we found a cut and dropped down in it and scrambled our way closer so the wife could use a lil rise up ahead for a rest...we popped up and the goats were gone..whole thing would have worked perfectly had another hunter not spooked the [bleep] from the road and they wandered off away from us....
unfortunately they way they wandered put the wind against us and the lil [bleep] have noses as good as any deer and we had to give up.....