Woodpecker Nests

We have a nest of chicks in a long needled pine tree about 12 feet off the ground that look like either some kind of woodpecker or woodcocks. Has anyone ever heard of either of these kinds of birds nesting in "regular" nests? the bottom of the nest is lined with horse tail hairs. the eggs (4) were solid white. It appears that the hen is out and about most of the day and the only one caring for the young, but I am not 100% sure about this. We live in West Central Wisconsin. Thanks for your input. I do not have any pictures available right now importunately, but would like to try to get a couple before they leave us.