Photos of a tree cavity in a Black Cherry tree that appears to be related to activity by a pair of Red-bellied Woodpeckers. It could be for a nest or may have been used for courtship between the male and female. The male was photographed near the cavity and the female was present with the male but took off just before the photo was taken.
(Photographed May 7, 2013 on private property, southern Peterborough County, Ontario, Canada)