(U.S. Fish and Wildlife Service via AP, file) This March 10, 2010, file photo provided by the U.S. Fish and Wildlife Service shows a female bi-state sage grouse in Nevada. Conservationists are headed back to court again to try to force the Trump administration to protect the rare game bird along the California-Nevada line where the government keeps changing its mind about whether to add the cousin of the greater sage grouse to the U.S. list of threatened and endangered species.