For many people in suburban neighborhoods, bluebirds are a regular spring and summer sight. But if you're like me and have been blue over a lack of bluebirds in your area, you might have to convince them to come to you. From the moment I first learned about bluebird nest boxes in school last year, I knew I had to put them up on the trail around my home in central Ohio. The thought of filling my neighborhood with Eastern Bluebirds—a feathered jewel that seldom shows itself in my part of the country—was irresistible. Of course, the boxes wouldn't just benefit me: They'd also help a struggling species that's facing off against climate change and invasive, territorial species like House Sparrows. To get started, I reached out to the local park association, which owns and maintains the trail I was eyeing. They put me in touch with Darlene Sillick, an organizer for the Ohio Bluebird Society and Columbus 探花精选 Society. Darlene ended up becoming my trusty mentor on the...