The aviary has a narrow duck pond in the back and a plywood square painted with the portrait of a coyote hanging on the front door. Inside, 71-year-old Willie H. uses plastic tweezers to feed moistened dog food pellets to juvenile robins through the bars of their cage. Like every day, he does this with his pet cockatiel, Bird, on his shoulder. The makeshift aviary he's spent the past 20 years working in is within the confines of the Marion Correctional Institution, where he's serving a potential life sentence. The Ohio Wildlife Center has been sending injured and orphaned wildlife to Marion for rehabilitation since the 1990s. According to Brittany Jordan, the center's wildlife rehabilitation operational director, these behind-bars rehab centers are now in five prisons across the state, and more institutions are joining the program as a way to help both the inmates and the animals. Willie ... was one of the first inmates to participate in the program, which has rehabilitated and released thousands of animals that required extra care after being treated at the Ohio Wildlife Center's hospital in Columbus. The inmates volunteer as caretakers and learn how to handle, feed and administer medication to a wide range of species"from barn swallows to opossums. While the Prison Program benefits wildlife ... it also rewards inmates with new skills, routine and purpose. They tend to stay out of trouble, away from substance abuse, and have an increased interest to learn more about the animals they care for.