In this Wednesday, Oct. 31, 2012 photo, after successfully netting and bagging four big horn sheep, a helicopter gently lowers the animals to the ground for biologists to examine, near Henderson, Nev. In an attempt to help repopulate areas of southern Utah, fifty sheep from the River and Muddy mountains in southern Nevada are being captured for relocation to Grand Staircase National Monument. (AP Photo/Julie Jacobson)