Adams is compiling the second edition of the "Michigan Breeding Bird Atlas." The first atlas was published in 1991.
He said the southern half of the Lower Peninsula has experienced the biggest expansion in bald eagle population.
"At the time of the first atlas, bald eagles were found in 15.7 percent of Michigan townships. Our recent research saw that number rise to 27.7 percent," Adams said.
Funke said delisting the bald eagle is a strong statement of improved conservation.
"When I was a kid, it was a big deal to see a bald eagle," he said. "The population increase is great. I want no endangered animals in Michigan. As a conservationist, I want to put myself out of a job."
Joe Vaillancourt writes for Michigan State University's Capital News Service.