Our Bird Comrades

by Leander S. Keyser

*This chapter is reprinted from that excellent bird magazine called "American Ornithology," published by Charles K. Reed, Worcester, Mass., and edited by his son, Chester A. Reed. The author is under obligation to these gentlemen for their courtesy in permitting him to reprint the article.

BIRDS OF THE INVERTED POSITION

There are a number of climbers in the bird realm, but none are quite so expert as the nuthatch, which may be regarded as a past-master in the art of clambering. The woodpeckers amble up the boles and branches of trees, and when they wish to descend, as they do occasionally for a short distance, they hitch down backward. The brown creepers ascend their vertical or oblique walls in the same way, but seldom, if ever, do anything else than clamber upward, never descending head downward after the fashion of the nuthatches.

A little bird that comes very near disputing the palm with the nuthatch as a sylvan coaster is the creeping warbler, which flits about over the tree boles in all kinds of attitudes, even with his dainty head pointed toward the earth. No fear in his little striped breast of the blood rushing to his brain. However, even this clever birdlet's dexterity is not equal to that of the nuthatch, for the latter is able to climb up and down a smoother wall than his little rival. More than that, the nuthatch glides downward with more ease and in a straight line, and does not fling himself from side to side as the warbler does. Indeed, the warbler's favorite method of going about is with his head directed toward the sky rather than the reverse, while it really seems that the nuthatch's predilection is to scuttle about in an inverted position. Does he wish to chisel a grub out of the bark of a tree? He usually stands above the target at which he aims, so that he can deliver his blows with more force, just as the human woodchopper prefers to take his position above and not below the stick or log upon which he expects to operate. There the bird clings to his shaggy wall, pounding away with might and main, until you fear he will shatter his beak or strew his brains on the bark. Sometimes, too, he thrusts his long, slender beak into a crevice and pries with it in a way that threatens to snap it off in the middle.

What has been said applies to the white-breasted nuthatch (Sitta carolinensis), but it is fair to assume that all the other members of this subfamily behave in the same way. The woodpeckers and creepers use their spiny tails as supports while stationary or in motion; not so the nuthatches, which are sufficiently nimble on their feet to stand or glide without converting their tails into braces. Odd as it may seem to the uninformed, the nuthatches belong to the order of passeres or perching birds, in spite of their creeping habits. The systematists have placed them in this niche of the avicular scheme, not only because they are able to perch like other passeres on twigs and small branches, but also because they have the foot of the true perching bird, with three toes in front and one, well developed, in the rear. In this respect they differ again from the woodpeckers, which have either two fore and two hind toes, or two in front and only one behind. This will appear all the more remarkable when it is remembered that the Picidae do not descend head downward at all, while the Sittinae are the head-downward goers par excellence. Yet they have only one rear toe to support them in their inverted position. You would naturally suppose that if any bird had need of two hind toes, it would be the nuthatch; but the result proves that, after all, Nature had her wits about her when she evolved this avian family.

The world over, there are twenty distinct species of nuthatches known to scientific observers, but only four of them are natives of America. Of course, there are a number of subspecies or varieties. All of them are incessant climbers and foragers, peering into crannies, pounding here and there to make the grubs stir in their hiding places, jabbing and prying with their beaks, and chiseling out all kinds of larvae, grubs, and borers that would, if permitted to live and multiply, soon devastate the timber and fruit trees and make this world a desert indeed. True, the other feathered clamberers and carpenters are fully as useful, but depend upon it, the nuthatches do their share in preserving our forests and orchards.

The white-breasted nuthatch is our most common species east of the great plains, breeding from the Gulf States to the northern border of the United States and to New Brunswick. One peculiarity about him is that he breeds throughout his range, and therefore may be found as both a summer and winter resident in all suitable localities within these boundaries. In the winter, no matter how old Boreas may bluster, he is one of the most cheerful denizens of the woods in our central latitudes, calling his nasal "yank, yank, yank," and sometimes indulging in a loud, half-merry outburst that goes echoing through the woodlands. No sound of the sylvan solitudes has a more woodsy flavor or is more suggestive of vernal cheer and good will. Sometimes he chatters to his human visitors in the most cordial tones as he glides up and down his arboreal promenade, or holds himself almost straight out.

A hole in a stump or tree makes Madame Nuthatch a cosy nursery, which she lines with feathers and leaves, making it soft and snug for her downy brood. Here they are safe from most of the prowlers that find the more exposed nests of many other birds. She deposits five to eight eggs of a white or creamy-white ground-color, speckled with rufous and lavender. During the season of incubation and brood rearing the nuthatches retire to the depth of the woods, and are quiet, secretive, and unsocial, seldom betraying their procreant secrets.