Elk Herd Grazing In Park Meadow
Birds
The commonest species are the western robin, the beautiful mountain bluebird, and, at middle elevations, the chickadee and junco. The hermit thrush and the solitaire, generally classed among the finest songbirds in the world, are both fairly common in suitable localities; and but little inferior to these in musical performance are the purple finch, ruby-crowned kinglet, western meadowlark, and rock and canyon wrens. The graceful violet-green swallow is unsurpassed in beauty of form and color, and the crested jay, magpie, and nutcracker are conspicuous for their handsome appearance and vigorous flight. Among birds particularly interesting because of curious and unusual habits are the broadtailed hummingbird, water ouzel, campbird, nuthatch, nighthawk, and the ptarmigan, pipit, and rosy finch of the high peaks.
Although widely distributed through the park, birds are more numerous along streams and near open marshes and meadows than in the dense forests. About 100 species are found regularly in summer, and nearly 150 have been recorded during the whole year.
Flowers
This park is especially notable for the presence of the blue columbine and many beautiful flowers of the gentian and primrose families; for the profusion of dwarf alpine plants on the meadows above timberline; and for the brilliance of certain species found in moist glades of the subalpine zone. Striking examples of the latter are the tall blue larkspur and monkshood, of many vivid hues, and the curious little red elephant.
Conspicuous and characteristic flowers of the lower altitudes are the mariposa lily, iris, wallflower, gaillardia, and numerous species of cinquefoil, pentstemon, and evening primrose. Among the less common groups, several delicate species of orchid, pyrola, violet, and anemone will delight the botanist. Over 700 distinct species of flowering plants have been collected within the park, and doubtless many more await discovery and identification by the careful student.
Trees
The principal trees are the Engelmann spruce, which forms extensive primeval forests in the subalpine region, the lodgepole pine, the prevailing tree of middle elevation, very common in second growth, and the ponderosa pine, a large spreading tree, occurring mainly in the lower valleys and foothills. The limber pine is frequent in high rocky places, assuming picturesque forms at timberline, and the Douglas fir, or false hemlock, is widely distributed, while the blue spruce and alpine fir are confined to moist stream banks. In addition to the coniferous trees, there are three species of poplar, of which the commonest is the well-known quaking aspen, growing in scattered groves throughout the park.