CROSBY TWP., Ohio — Ron Canterbury pops open his tailgate and turns a grocery bag upside down. Inside that bag are dozens of Ziploc bags filled with dead birds.

They tumble onto his truck bed. Most did not live one year.

“This pile here is just one species,” Canterbury said. “And that’s all from campus.”

He is standing near a research field in Crosby Township. Other birds chirp from brown plastic bags sealed by clothespins.

“There’s so many birds,” Canterbury said. “I can’t keep up.”

A team of his students are trapping and tagging them, so he can study how long they live and where they end up. The ornithologist at the University of Cincinnati has been studying the animal for decades. And every morning, some of his students walk routes on campus — including the VA Medical Center, EPA o

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