Archery hunters, Squirrel hunters, Muzzleloader Hunters, Turkey Hunters, Smallgame hunters & Trappers are putting pressure on Coyote this time of year.
Human activity displaces Coyote.
Also, disperal has started. The pups you may have heard yip'n, bark'n and howl'n in late summer/early fall, may have flown the coop and may be serveral zip codes away.
Any fresh sign around?
Are you sure they are there, NOW?
You can't call what's not there.