ND coyote killer--Pups of both coyotes and red fox are not really pushed out of their home territories or dens. Re: dens they just gradually quit using them; generally by mid-late July for red fox and early August or so for coyotes--at least in this part of the country. Some pups of both species gradually begin dispersing from their natal territory in early October; however, not all pups disperse-especially the coyotes.
Re: hunting, it kind of depends on your objective. If you are strictly a fur hunter, then I would wait until about mid-October to start serious hunting. Pelts won't be completely prime until about Thanksgiving, but they will be sufficiently "furred out" to command respectable prices. If you are a varmint hunter, then anytime is a good time to hunt.
Leonard is exactly correct re: posting. Lots of guys/gals may have good observations to contribute on a subject, but feel they shouldn't interrupt what looks like a semi-private conversation. I'm not criticizing; I've done the same thing myself.
How about some observations from some of you guys in other areas on this subject?