Owls And hawks puke up chunks of fur and bone from the parts of their meals they cannot digest. In the woods, i can find these random piles of bones easily. I can even more now that the blanket of snow has melted away. Looks like the Owl's diet consists mostly of voles. The best bone in most of pellets for identification is the lower jaws. I spotted this year's first owl pellet on the 17th. The best way to look for them is to check the area around the trunks of old white pine trees and this is typically where they would perch to digest food.

Great horned owls usually nest in old red tailed hawk nests. Owls have descended from hawks but there head has a different shape because it is focused on hearing vs hawk heads which are focused on sight.