EDWARD KINSMAN / SCIENCE PHOTO LIBRARY EDWARD KINSMAN / SCIENCE PHOTO LIBRARY
A cross section of a woodpecker's nest. The bird used its beak to peck out a cavity in a rotten tree. Here the tree has been sawed vertically to reveal the cavity made by the bird. The wood is maple and the nest was discovered in a tree Northern New York State.
Model release not required. Property release not required.