Coloradoan: The tiny pika, the chirping denizen of high alpine talus slopes throughout the Rockies and in Rocky Mountain National Park, won’t be protected under the Endangered Species Act even as some pika populations disappear because of climate change. The U.S. Fish and Wildlife Service announced Feb. 5 that the pika, a relative of the rabbit, will not make the endangered species list because some populations continue to thrive even as others are declining. Biologists at Rocky Mountain …