This is just my opinion, pertaining to coyote hunting. At least for me, Daytime is a cakewalk! Taking into consideration geographical locations. I've had the opportunity to hunt many states. Example: Daytime. No matter where your calling, you have the opportunity to "SEE" just about everything. You can see the terrain prior to your post, when calling, you can "SEE " the coyote(s) coming in from a long distance, your movement is much less, you can easily range a coyote, you can "SEE" if a coyote hangs up and still take a long distance shot, and in most cases recover it! If you have more than one come in, you have a much better chance at shooting a double or even a triple. You can take a running shot easier during the day, you can "SEE" movement in the distance. Even if they are not facing you. That's just a few reasons. Now Night: pertaining to using lights. While calling, difficult to "SEE" a proper posting area, if your hunting new ground. Very difficult to range the distance, difficult to kill more than one if a shot is taken, and the others blow out..., somewhat difficult to locate a downed animal, especially by yourself. Your not taking long distant shots, in comparison to Day time. While your scanning, your moving, at which time coyotes can see your movements. Transition from scan light to kill light needs to be quick and precise. Jmho, we can go on forever on the coyotes senses, their nose, can smell in parts per million, that sense does "NOT" go away at night. Their hearing does not go away at night! In fact, both those senses heighten at night because their eyesight can be somewhat diminished at night, but not as much as most may think. Again, biologist have proven this. So, for me, Day is much easier than night....that's one reason I mainly hunt at night! Not inflating my personal experience. But I've hunted these predators for nearly 45yrs, kill an average of 150-200 from October till about now. I've had the opportunity to hunt with "Killers"! Not someone who is well known, no TV shows, no sponsors, not staffers, just pure "old school" killers. Easily taking 8,9,10 or more on just about every hunt. They, would agree! Night is more difficult to hunt than day. Our senses will diminish much more than a predator, simply because we are in "THEIR" territory, not ours. Again, this is simply my opinion! (Sorry for no paragraphs. Posted from my phone) Regards, Drop