Red foxes remain active through the winter. If you're lucky, you might see a red fox pouncing on prey through the snow or taking advantage of a sunlit snowbank to warm up on a cold day, but most people will have better luck spotting tracks or hearing a red fox this time of year. Red foxes are generally solitary through much of the winter, but it's now breeding season for the red fox, a particularly vocal time for this species as they look for mates. At night, listen for the "vixen scream", an ee