Knowlton’s cactus and Uncompahgre fritillary butterfly on the endangered species list
Among a growing list of species in need of federal protections, the U.S. Fish and Wildlife Service has placed the Knowlton’s cactus and Uncompahgre fritillary butterfly on the endangered species list. According to Fish and Wildlife, an endangered listing is any species in danger of extinction through all or a significant portion of its range, whereas a threatened listing is any species that is likely to become endangered within the foreseeable future.