DESCRIPTION AND TECHNICAL OBSERVATIONS.

Genus Cyanocorax, Boie, in Oken’s Isis, 1826, part II., p. 977.

Bill rather large and strong, with the ridge of the upper mandible curved gradually from the base to the point—ridge of the lower mandible curved upwards. Nostrils at the base of the bill, in rather a large membrane, and partially concealed by projecting feathers. Wings moderate, rather rounded, fourth, fifth and sixth primaries usually longest; secondaries long, exceeding some of the shorter primaries. Tail rather lengthened and rounded; tarsi robust, rather long; toes and claws strong. Head usually with a crest or with the frontal plumes erect and crest-like. Plumage of various colors, mostly with some part of greater or less extent, blue. Exclusively American. Type C. pileatus. (Wagler.)

Cyanocorax luxuosus. (Lesson.) Garrulus luxuosus. Lesson Revue Zoologique 1839, p. 100. (Paris.) Cyanocorax luxuosus. (Less.) Du Bus, Esquisses Ornithologiques, part IV. pl. 18. (Brussels.)

Form. Feathers of the head in front or at the base of the upper mandible, short, erect and rigid—other plumage of the head above somewhat elongated; wings rather short, with the fourth and fifth quills slightly longest; tail ample, and rather long, with the central feathers longest; bill strong, tarsi and feet moderate, claws strong and curved.

Dimensions.—Total length (of skin) from the tip of the bill to the end of the tail, about 10½ inches, wing 4¾, tail 5½ inches.

Colors.—Short feathers at the base of the bill, blue, which color is succeeded by a transverse band of bluish white; cheeks and head above, pale azure blue; sides of the head in front of and behind the eyes, throat and neck in front fine silky black, which forms a wide mask extending to the breast.

Body above, wings and central tail feathers, fine parrot-like green, deepest on the tail, entire inferior surface of the body pale yellowish green. External tail feathers, pale yellow. Bill and feet dark colored. The green feathers of the tail running into blue at their ends, and nearly black on their under surface.

Sexes similar.

Habitat. Mexico and Texas—Specimens in the Museum of the Academy of Natural Sciences, Philadelphia.

Observations. The present species we regard as deviating in some degree from the characters of the typical species of this genus, as is the case with other species to which it is nearly related. We do not at present, however, consider them as presenting peculiar characters sufficient to constitute a distinct genus, though that excellent ornithologist, the Prince of Canino, has given to this group the generic name of Xanthoura, which embraces the species now before us, C. yucas (Boddaert) and X. quatimalensis. Bonap. (Consp. Av. p. 380.)

Plate 2
The Californian Woodpecker
Melanerpes formicivorus (Swains.)

MELANERPES FORMICIVORUS.—(Swainson.)
The Californian Woodpecker.
PLATE II.—Male and female.

The most richly colored Woodpeckers of North America, at least in our Opinion, are two of the most abundant species. We allude to the bird now before us, and to the well-known red-headed Woodpecker, Melanerpes erythrocephalus, (Linn.) in both of which the prevailing colors are a fine glossy black and a rich crimson.

Were the latter bird less common in the Atlantic States, his claims to be considered one of our finest plumaged species would perhaps be more distinctly recognised, and his very showy head of the finest crimson could not fail to attract admirers. As, however, he has the disadvantage of an attributed disposition to take liberties entirely forbidden by the farmer and gardener, and is moreover to be seen in almost every woodland in the summer season, his gay appearance is by no means duly appreciated, nor his general character held in high estimation. He is however not so abundant as formerly, and with the destruction of the large trees of the forest, which is constantly carried on to make room for the increasing population in the more densely settled States, the time may arrive when the sight of the red-headed woodpecker, with his brilliant plumage, will be an unusual and pleasing circumstance to the young, and serve to remind the aged of perhaps long-forgotten incidents and associations of early life when remnants of the forest yet flourished even in proximity to cities, or varied the aspect of cultivated districts.

Our present species is one of the most abundant of the birds of California. It appears to take the place of the red-headed woodpecker in the countries west of the Rocky Mountains, extending its range from Oregon into Mexico, and probably to Guatimala and other countries of Central America. It is not inferior to that species in the beauty of its colors, is quite as unwary and familiar in its disposition, and when the population of the great Western States shall have arrived at such a very desirable stage of progress as to possess a generation of juvenile sportsmen, our bird will no doubt be quite as great a favorite on holiday shooting excursions.

Several species of woodpeckers have had ascribed to them the habit of accumulating stores of provisions in anticipation of the approach of winter, but we have no knowledge of this being done by any American species, except that now before us. For it we can claim this degree of instinctive prudence on undoubted evidence, and shall have the pleasure, in the present article, of laying before our readers an account of it, which is not only a remarkable illustration of instinct, but shows a singular method of mechanical preparation and management.

Our valued friends, Mr. John G. Bell of New York, and Dr. A. L. Heermann of Philadelphia, both of whom have made extended visits to California for the purpose of investigating its Natural History, found this woodpecker very abundant in all the parts of that country which either of them visited.

The former gentleman has had the kindness to inform us, that he considers it by far the most extensively diffused and common woodpecker of that country. He represents it as somewhat disposed to gregariousness in its habits, and has frequently seen individuals on the same tree so numerous and so close together, that several might have been killed at a single discharge. According to Mr. Bell, its note very considerably resembles that of the red-headed woodpecker, which it much resembles also in flight and other general characters. He observed it only on trees, particularly on the pines; and upon examination found the contents of the stomachs of all the specimens which were procured by him, to be composed principally of ants, of which several of the species of California habitually frequent trees. The large collection of birds brought home by Mr. Bell contained numerous specimens of this species.

The account given by Dr. Heermann of this bird is of a highly interesting character, and he has identified, for the first time, the species of woodpecker of which previously nothing could be accurately made out from the statements of travellers respecting a bird which possessed the provident and curious instinct of storing away a supply of food for the winter in holes made for that purpose in the bark of trees. His remarks are in his “Notes on the Birds of California observed during a residence of three years in that country,” published in the Journal of the Academy of Natural Sciences of Philadelphia, Vol. II. p. 270. (Quarto 1853,) from which we transcribe the following:

“This is the noisiest and most abundant of the woodpeckers of California. Perched on the topmost branch of a tree, it darts suddenly into the air in pursuit of an insect, and having secured its object, soon again returns to the same place, only to repeat this manœuvre in a few moments.

“In the fall season this species is busily engaged in digging small holes in the bark of the pines and oaks, to receive acorns, one of which is placed in each hole, and is so tightly fitted or driven in, that it is with difficulty extracted. Thus the bark of a large pine, forty or fifty feet high, will present the appearance of being closely studded with brass nails, the heads only being visible. These acorns are thus stored in large quantities, and serve not only the woodpecker during the winter season, but are trespassed on by the jays, mice and squirrels.

“The nest of this bird is dug out in the body of a tree, and is from six inches to two feet in depth. The eggs, four or five in number, are pure white.”

The following graphic and intelligent account, to the same purpose, is from Kelly’s Excursion to California, and is evidently from the pen of an excellent observer and an agreeable writer:

“In stripping off the bark of this tree, I observed it to be perforated with holes, larger than those which a musket ball would make, shaped with the most accurate precision as if bored under the guidance of a rule and compass, and many of them filled most neatly with acorns. Earlier in the season I had remarked such holes in most of all the softer timber, but imagining that they were caused by wood insects, I did not stop to examine or inquire, but now finding them studded with acorns, firmly fixed in, which I knew could not have been driven there by the wind, I sought for an explanation, which was practically given me by Captain S——’s pointing out a flock of woodpeckers, busily and noisily employed in the provident task of securing the winter’s provision. For it appears that this sagacious bird is not all the time thriftlessly engaged in ‘tapping the hollow beach tree’ for the mere idle purpose of empty sound, but spends its summer season in picking these holes, in which it lays its store of food for the winter, where the elements can neither affect nor place it beyond their reach, and it is regarded as a sure omen that the snowy period is approaching when these birds commence stowing away their acorns, which otherwise might be covered by its fall. I frequently have paused from my chopping, to watch them in the neighborhood, with the acorns in their bills, half clawing, half flying around the tree, and have admired the adroitness with which they tried it at different holes until they found one of its exact calibre; when, inserting the pointed end, they tapped it home most artistically with the beak, and flew down for another.

“But the natural instinct of this bird is even more remarkable in the choice of the nuts, which are invariably found to be sound, whereas it is an utter impossibility in selecting them for roasting, to pick up a batch that will not have a large portion of them unfit for use, the most smooth and polished frequently containing a large grub generated within. Even the wily Digger Indian, with all his craft and experience, is unable to arrive at any thing like an unerring selection, while in a large bag full, that we took from the bark of our log, there was not one containing the slightest germ of decay. These woodpeckers never encroach on their packed stores until all the nuts on the surface of the ground are covered with snow, when they resort to those in the bark, and peck them of their contents without removing the shell from the hole. The bark of the pine tree, from its great thickness, and the ease of boring, is mostly sought for by these birds as their granary for the winter season.”

This extraordinary example of instinct is scarcely surpassed by any other which has been observed in the animal kingdom, and it is to be hoped that further accounts will be furnished by observers in the countries which it inhabits, respecting the bird which is endowed with such interesting and unusual habits.

This woodpecker is common in Mexico in woods on the table lands, and was observed by Mr. Pease also in the upper part of the tierra caliente. It was first introduced to notice from Mexican specimens received from the vicinity of Real del Monte by Mr. Swainson, a distinguished English naturalist, who first described it in the Philosophical Magazine, 1827, p. 439 (London.) It was observed in California previous to that country having become a part of the United States, by Mr. Nuttall, the eminent botanist and zoologist, who gave it a place in his Manual of the Ornithology of the United States and of Canada. Vol. I., p. 682 (Boston, 1840.)

Our figures are rather less than one-third of the size of life.