Given my recent fox troubles, I have done a significant amount of reading on them and chatted with several animal control and fish and game folks. I was told that while It is true that they are more active in the transition hours, it is spring and they have a den of kits to feed and will hunt whenever it is convenient. Apparently my hens were very convenient... So, being out in the day is not unusual this time of year and if it was not acting odd, probably ok (as heather points out). This years litters would have been born in march at the earliest (unless this odd winter had them birthing earlier than usual), so that puts them at 10 weeks tops. That is still pretty small in the fox world. I don't think they leave the den until they are around 8 weeks and then they usually hunt with the parents until they are around 7 months when they begin to go out on their own. I think you probably just saw a small fox. Was it a red or a gray?Fox are supposed to hunt early morning and early evening.
I guess sunrise and sunset. Unless really hungry / lots of babies
to feed.