While western sections of the forest have a mixture of sagebrush and grasses, the higher elevations in the east support lodgepole pine, and numerous species of spruce and fir. In addition to grizzlies most of the major megafauna associated with Yellowstone National Park can be found in Caribou–Targhee National Forest. Mammalian species of black bear, wolf, elk, moose, mule deer, bison, cougar, and pronghorn have all been seen by visitors on forest lands. An active peregrine falcon recovery program was begun to return this bird species to some of their ancestral range. Cutthroat trout, brook trout and pike are found in the streams and lakes and the forest is considered one of the best fishing areas in the world for cutthroat trout.