I respectfully disagree with the blinking part of your statement. I have several fox blink at me every year that I kill.
Predators blink there eyes in the daylight too and there is no artificial light on them.
But Dennis Kirk said that's what blinking means in his now 26 + year old How to fox hunting book !!!! LOL LOL Just joking...
Actually... If the light is to bright and it hurts their eyes... They ain't going to stay around to even let you see them blink,,,There going to be gone in a minisecond..
Now I have had a few VIXEN's wink at me in my time!!!