Experts issue warning about overlooked threat to iconic US creatures: 'The picture is grim if we sit back and do nothing'

Experts issue warning about overlooked threat to iconic US creatures: 'The picture is grim if we sit back and do nothing'

Cheatgrass might sound sneaky, but mule deer aren't falling for it — they're packing up and moving on. What's happening? A new study uncovered a troubling trend for one of the West's most iconic species: Mule deer are avoiding areas overtaken by cheatgrass and other invasive plants.  As Explore Big Sky reported, researchers at the University of Wyoming found that once invasive grasses cover more than 13% of an area, deer begin to move elsewhere.…