I'd imagine that if they are in the shadow,they could see passed the glare of the light,
and maybe see you or your movements, if they're in close
But if you're hunting in a field,and the pred is in the woods, comming to the call that is in the field,
I,m sure he'll get shadows from the trees in the woods,
until he breaks the field anyway.
I don't think it would bother them until its a close range game