ST. LOUIS COUNTY, MO (KMOX) - St. Louis County officials have been attempting to put a zip-line in a county park and, after two failed attempts, they are setting their sights on Creve Coeur.

Most recently, the zip-line plan was booted from Greensfelder Park in Wildwood due to concerns that zip-liners would scare horses which use the trails there. Now, conservationists like Jean Favara with the St. Louis Audubon Society are concerned about what a zip-line course would mean for the many endangered bird species that live in Creve Coeur Memorial Park.

“We would like to understand what the impact of this project is going to be on nesting and foraging on the birds before it’s approved,” she said. “We would like to see a decision made as an informed decision and informed, in my mind, means data to support the fact that birds would not be affected.”

County officials say the park is about 2,000 acres and the zip-line course would only use about seven acres. County Executive Charlie Dooley would not commit to an environmental impact study before the next vote, saying that decision is the Parks Department’s to make.