MOUND CITY, Mo. (AP) — Environmental groups have raised concerns about a proposed wind farm in northwest Missouri near a national wildlife refuge that attracts migratory birds.

Element Power of Portland, Ore., wants to build Missouri’s largest wind farm on 25,000 acres east of the Squaw Creek National Wildlife Refuge.

The Kansas City Star reports (http://bit.ly/1mrOXxJ ) Element Power plans to break ground soon for the $400 million Mill Creek Wind Energy Project, which will have 84 to 118 wind turbines.

The Audubon Society and the American Bird Conservancy are predicting a slaughter as birds and bats fly into the turbines as they head into or out of Squaw Creek.

Element Power acknowledges that some birds would be killed but says most species at Squaw Creek fly too high to hit the turbines.