Post 00231
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When I was exploring the Merced group, climbing up the grand cañon between the Merced and Red mountains into the fountain amphitheatre of an ancient glacier, just as I was approaching the small active glacier that leans back in the shadow of Merced Mountain, a flock of twenty or thirty of these little birds, the first I had seen, came down the cañon to meet me, flying low, straight toward me as if they meant to fly in my face. Instead of attacking me or passing by, they circled round my head, chirping and fluttering for a minute or two, then turned and escorted me up the cañon, alighting on the nearest rocks on either hand, and flying ahead a few yards at a time to keep even with me.
Humming-birds are among the best and most conspicuous of the mountaineers, flashing their ruby throats in countless wild gardens far up the higher slopes, where they would be least expected. All one has to do to enjoy the company of these mountain-loving midgets is to display a showy blanket or handkerchief.
A fine, hearty, good-natured lot of woodpeckers dwell in the Park, and keep it lively all the year round. Among the most notable of these are the magnificent log cock (Ceophlœus pileatus), the prince of Sierra woodpeckers, and only second in rank, as far as I know, of all the woodpeckers of the world; the Lewis woodpecker, large, black, glossy, that flaps and flies like a crow, does but little hammering, and feeds in great part on wild cherries and berries; and the carpenter, who stores up great quantities of acorns in the bark of trees for winter use. The last-named species is a beautiful bird, and far more common than the others. In the woods of the West he represents the Eastern red-head. Bright, cheerful, industrious, not in the least shy, the carpenters give delightful animation to the open Sierra forests at a height of from three thousand to fifty-five hundred feet, especially in autumn, when the acorns are ripe. Then no squirrel works harder at his pine-nut harvest than these woodpeckers at their acorn harvest, drilling holes in the thick, corky bark of the yellow pine and incense cedar, in which to store the crop for winter use,—a hole for each acorn, so nicely adjusted as to size that when the acorn, point foremost, is driven in, it fits so well that it cannot be drawn out without digging around it. Each acorn is thus carefully stored in a dry bin, perfectly protected from the weather,—a most laborious method of stowing away a crop, a granary for each kernel. Yet the birds seem never to weary at the work, but go on so diligently that they seem determined to save every acorn in the grove. They are never seen eating acorns at the time they are storing them, and it is commonly believed that they never eat them or intend to eat them, but that the wise birds store them and protect them from the depredations of squirrels and jays, solely for the sake of the worms they are supposed to contain. And because these worms are too small for use at the time the acorns drop, they are shut up like lean calves and steers, each in a separate stall with abundance of food, to grow big and fat by the time they will be most wanted, that is, in winter, when insects are scarce and stall-fed worms most valuable. So these woodpeckers are supposed to be a sort of cattle-raisers, each with a drove of thousands, rivaling the ants that raise grain and keep herds of plant lice for milk cows. Needless to say the story is not true, though some naturalists, even, believe it. When Emerson was in the Park, having heard the worm story and seen the great pines plugged full of acorns, he asked (just to pump me, I suppose), “Why do the woodpeckers take the trouble to put acorns into the bark of the trees?” “For the same reason,” I replied, “that bees store honey and squirrels nuts.” “But they tell me, Mr. Muir, that woodpeckers don’t eat acorns.” “Yes, they do,” I said, “I have seen them eating them. During snowstorms they seem to eat little besides acorns. I have repeatedly interrupted them at their meals, and seen the perfectly sound, half-eaten acorns. They eat them in the shell as some people eat eggs.” “But what about the worms?” “I suppose,” I said,“that when they come to a wormy one they eat both worm and acorn. Anyhow, they eat the sound ones when they can’t find anything they like better, and from the time they store them until they are used they guard them, and woe to the squirrel or jay caught stealing.” Indians, in times of scarcity, frequently resort to these stores and chop them out with hatchets; a bushel or more may be gathered from a single cedar or pine.