Beautiful eastern bluebirds are cavity-nesting birds, but are often out-competedd 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 from Wild Birds Unlimited, including instructions on how to properly set-up and monitor a bluebird box or bluebird trail. All ages. Free for WVBG members, $15 for non-members.