Beautiful eastern bluebirds are cavity nesting birds, but are often out competed for nesting sites by house sparrows or starlings. Luckily, bluebirds are happy to nest in special boxes made by humans. Learn more about bluebirds with Scott Cavallaro and Kendall Goins from Wild Birds Unlimited, including instructions on how to properly set-up and monitor a bluebird box or bluebird trail. All ages. Offered free in conjunction with Wild Birds Unlimited.