emeraldterriers1, I've seen coyote family groups still together in mid December. Soon afterwards they scattered their yearling pups. To the outer edge's of their territory & beyond. For that adult female coming in season, I suspect was shortly there after, or prior.
Red Fox on the other hand, some pr-up/breed/den abit earlier than do coyotes. I've seen a pr of Reds on a cleaned out den mound, in November.
Some people bristle, or call bs on my experiences. As they tend not to mesh with those in the know. LOL! Oh well.
It is obviously better to get out & see for yourself. Rather than buy into everything someone spouts. Or pulls from written form, as to the TOTAL TRUTH, eh.
Here is a family group, I watched on 12/18/09. The next day, the yearlings were gone/scattered. I also seen the adult female alone the following day.
I found it interesting this day. The adult male/[dark tail] went around to various pups, et pinned them down in the deep snow. Adult female just sat & watched. Except she assisted in pinning down a female pup. From what I could tell, in this group. There was 4-male & 1-female yearlings. I watched this group for around 45 minutes or so, learning/observing their behaviors.