Wildlife-friendly yard

The yard is blanketed in snow, the birdfeeders and birdbath covered. We can't get into the back yard without tring to plow through crotch-high snow. But today we had a different visitor to the backyard. A fox (I wonder if it's the same one I have seen before), spent the day sleeping, curled in a ball at the furthest corner of the backyard. Come dusk at 6:00, up he got, climbed the fence, and trotted away. Will he be back tomorrow?