Post 00739
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On the 28th of June, at the head of Owen’s Valley, I caught one of the young that was then just able to fly. It was seven inches long, of a uniform gray color, blunt-billed, and when captured cried lustily in a shrill piping voice, clear in tone as a boy’s small willow whistle. I have seen flocks of from ten to thirty or forty on the east margin of the Park, where the Mono Desert meets the gray foothills of the Sierra; but since cattle have been pastured there they are becoming rarer every year.
Another magnificent bird, the blue or dusky grouse, next in size to the sage cock, is found all through the main forest belt, though not in great numbers. They like best the heaviest silver-fir woods near garden and meadow openings, where there is but little underbrush to cover the approach of enemies. When a flock of these brave birds, sauntering and feeding on the sunny, flowery levels of some hidden meadow or Yosemite valley far back in the heart of the mountains, see a man for the first time in their lives, they rise with hurried notes of surprise and excitement and alight on the lowest branches of the trees, wondering what the wanderer may be, and showing great eagerness to get a good view of the strange vertical animal. Knowing nothing of guns, they allow you to approach within a half dozen paces, then quietly hop a few branches higher or fly to the next tree without a thought of concealment, so that you may observe them as long as you like, near enough to see the fine shading of their plumage, the feathers on their toes, and the innocent wonderment in their beautiful wild eyes. But in the neighborhood of roads and trails they soon become shy, and when disturbed fly into the highest, leafiest trees, and suddenly become invisible, so well do they know how to hide and keep still and make use of their protective coloring. Nor can they be easily dislodged ere they are ready to go. In vain the hunter goes round and round some tall pine or fir into which he has perhaps seen a dozen enter, gazing up through the branches, straining his eyes while his gun is held ready; not a feather can he see unless his eyes have been sharpened by long experience and knowledge of the blue grouse’s habits. Then, perhaps, when he is thinking that the tree must be hollow and that the birds have all gone inside, they burst forth with a startling whir of wing-beats, and after gaining full speed go skating swiftly away through the forest arches in a long, silent, wavering slide, with wings held steady.
During the summer they are most of the time on the ground, feeding on insects, seeds, berries, etc., around the margins of open spots and rocky moraines, playing and sauntering, taking sun baths and sand baths, and drinking at little pools and rills during the heat of the day. In winter they live mostly in the trees, depending on buds for food, sheltering beneath dense overlapping branches at night and during storms on the leeside of the trunk, sunning themselves on the southside limbs in fine weather, and sometimes diving into the mealy snow to flutter and wallow, apparently for exercise and fun.