"Notwithstanding the care," continues the same writer, "which this bird, in common with the rest of the genus, takes to place its young beyond the reach of enemies, within the hollows of trees, there is one deadly enemy against whose depredations neither the height of the tree nor the depth of the cavity is the least security; this is the black snake (_Coluber constrictor_), who frequently glides up the trunk of the tree, and, like a skulking savage, creeps into the Woodpecker's peaceful abode, devours the eggs and helpless young, in spite of the cries and flutterings of the parents, and, if the place be large enough, coils himself up in the spot they occupied, where he will often remain for several days. The eager school-boy, often hazarding his neck to reach the Woodpecker's hole, at the triumphant moment when he thinks the nestlings his own, strips his arm, launching it down the cavity, and grasps what he imagines to be the callow young, starts with horror at the sight of a hideous shape, and retreats down the tree with terrified precipitation. Several adventures of this kind have come to my knowledge, and one of them was attended with serious consequences--both snake and boy fell to the ground; and a broken thigh and long confinement cured the youngster of his ambition for robbing Woodpeckers' nests." THE ANT-EATING BLACK WOODPECKER. The ANT-EATING BLACK WOODPECKER (_Melanerpes formicivorus_) is an inhabitant of California and Mexico. Its body is black; the brow, a spot on the exterior quills, the anterior border of the hinder quills, and the rump are white; the top of the head as far as the nape is light red; the throat and a band upon the breast are black; the region of the throat is relieved by the sulphur-yellow feathers, by which the black portion is surrounded; the back and sides are streaked longitudinally with white; the eye is yellow, the beak and feet are black. This species is nine inches long; the wing measures five inches and a quarter, and the tail two and a quarter. "The _Melanerpes formicivorus_," Hermann tells us, "is the noisiest and most numerous of all the Woodpeckers inhabiting California. During the summer these birds are constantly to be seen chasing their insect prey about the topmost branches of the trees, and in autumn are equally busy in laying up a store of acorns against the approach of winter. This is accomplished by boring a series of holes in the trunk of a tree, into each of which an acorn is so firmly introduced as to render its extrication a work of difficulty. An oak or pine tree thus pierced often presents the appearance of being studded with a multitude of bronze nails." * * * * *