I believe coyotes can see much better in low light than humans can.Re-read what Mr. P wrote about rod receptors. Coyotes have more rods, to enhance their low light vision. Humans have more cones, to enhance our color perception.
Out where I typically hunt, it is wide open spaces, with visibility measured in miles, I quit getting out there before dawn after I noticed my early morning success ratio was not good. I think coyotes could see me from way out there while I was walking across the prairie in the dark and watch me get set up.
Instead, I now get out there at about 8am and hunt till dark.
Coyotes have to be able to see well enough in the dark in order to chase down their next meal. I don't believe they would be able to catch a rabbit in the dark, on hearing and scenting abilities alone. And nobody respects a coyotes nose more than me, lol.
copy & paste:A lot better than we do, says Paul Miller, clinical professor of comparative ophthalmology at University of Wisconsin-Madison. Dogs, he says, “can probably see in light five times dimmer than a human can see in.”The light-sensitive compounds in the retina respond to lower light levels. And the lens is located closer to the retina, making the image on the retina brighter.
But the canine’s biggest advantage is called the tapetum. This mirror-like structure in the back of the eye reflects light, giving the retina a second chance to register light that has entered the eye. “Although the tapetum improves vision in dim light, it also scatters some light, degrading the dog’s vision from the 20:20 that you and I normally see to about 20:80,” Miller says.end of copy&paste.