Figure 1 . A: A black-capped chickadee (Poecile atricapillus ) egg in one of the nest boxes set up at Belle Sherman Elementary in Ithaca, New York, USA. B: An opened nest box to show the Eastern bluebird (Sialis sialis ) nest built within. C: Black-capped chickadee nestlings inside a nest box. D: Twelve boxes decorated by Belle Sherman fifth graders prior to installation on poles on school grounds.