In the wild woods we placed two PVC-tube nest boxes that simulate the tree snags which birds use for nesting sites. We packed sawdust in the tubes to make them seem like a decaying tree snag. Both have been totally excavated; earlier this season we watched a pair of black-capped chickadees remove all the sawdust from one tube before they built their nest inside. The other tube is excavated and has accumulated some nesting material but no active nest thus far. The tube that was the site of the successful chickadee nest is now the nest of a house wren. She laid her first egg today!
