An anonymous man is putting little wooden birds and butterflies above roadways, carefully bolted on road signs and in trees in the Great Falls, Va., area, and as long as they don’t cover up the signs, the Virginia Department of Transportation is going to let them stay.

"There’s no denying that they are charming and fun … and they don’t appear to pose a safety hazard to motorists," read a statement from VDOT.

The man told News4 he puts them up at night, and he plans to continue with more.

"The idea is it’s supposed to be positive,” he said. “It creates interest in wildlife.”