For additional information about cavity-nesting birds, nestboxes and related topics, please visit these sites (links will open in a new browser window). This list is constantly under construction - if you have a site you think we should include, please contact us.
The North American Bluebird Society is a non-profit education, conservation and research organization that promotes the recovery of bluebirds and other native cavity-nesting bird species in North America. Learn about the different species of bluebirds, how to attract and care for them and download educational materials.
Sialis.org provides a wealth of general information on how to attract nesting bluebirds and other small cavity nesters, including distinguishing nests and eggs, heat, dealing with house sparrows, house wrens, nestboxes, etc.
The Bluebird Nut Cafe is a forum for Bluebird enthusiasts and others who are interested in Bluebirds to to gather information, exchange stories, pictures, advice, tips, and hints.
http://www.zbestvalue.com/birdsandnature.htm Information, tips and links related to nestboxes and cavity-nesting birds. Site contains comprehensive heat test results conducted on nestboxes in various configurations and colors.