
Squirrels are not a favorite with providers of nest boxes. They usurp boxes and enlarge entrance holes. However, with the exception of European starlings and house sparrows, any species using a box in our yard is welcome. I do evict white footed mice, but, usually not in the winter.
The following still photos are taken from a single frame of video from the vhs tapes. This process results in a substantial loss of quality compared to the original camera image and vhs tape.
The large nest box in a pine tree Note the pvc pipe which runs half way down the tree and then horizontally to the eave of the chicken coop
Mother keeping young warm on a cold night.