Anything that adds to the learning experience on foraging/free-ranging is perfectly fine with me.
I think it would beneficial to point out that contrary to conventional wisdom and many websites, some or all chickens do in fact appear to have tapetum lucidum and a degree of night vision. When my free range flock of games/JF hybrids and guineas are disturbed at night, they fly off into the darkness and take cover until morning. Sometimes during the night they return to the original roost. They seem to have enough night vision to do that.
Here’s one of my American game bantams showing eyeshine. I’ll take pictures of my flock tonight to see if all have eyeshine or only the games, guineas, and turkeys.
Chickens confined in coops at night are denied the ability to fly away and take cover.