A History of North American Birds, Land Birds. Volume 2. Robert Ridgway

Чтение книги онлайн.

      A very young bird (1,896) has the whole under parts dull white, streaked and spotted on the sides of the throat and on the breast with dark brown. The crown and back are also thickly spotted. In 5,734 the ash of the breast has made its appearance; the middle of the belly is white, spotted; the chin white, encircled by spots. The spots above are restricted to near the head, and there is a small central patch of chestnut on the crown.

      No. 1,896 is the original “Green-tailed Sparrow” killed July 12, 1834, by Townsend, and described in an extract of a letter to Mr. Audubon, published page 336 of Vol. V. of the Ornithological Biography.

      Habits. Dr. Kennerly, who procured a specimen of this bird at San Elizario, Tex., December 16, states that it was obtained with some difficulty. For several successive days it was found in the same place, occupying a small clump of very thick weeds. When aroused, which was only accomplished with some effort, its flight was short, rapid, and decidedly irregular. Its motions on the ground were very awkward. This species was found by Mr. Ridgway very generally distributed throughout the fertile mountain portions of the interior. It was not seen by him in California, and was first met with in the ravines at the base of the eastern slope of the Sierra Nevada. On the high mountain-ranges it was a characteristic and the best-known singer, as well as one of the most abundant of the Fringillidæ, being found in all bushy places, from the bases to the summits of the mountains. It is exclusively a summer species, arriving at Carson City about the middle of April. He describes the usual note of this bird as very peculiar, and, as nearly as can be described, a sweet laughing utterance of the syllables keek-keek´, a little resembling the tweet of a Canary, but very musical. This curious note was generally uttered when anything unusual attracted its attention, such as the approach of an intruder. Then, with elevated tail and its very conspicuous red cap raised, it would hop familiarly and unsuspiciously about. He adds that it is a songster of high merit, in power and variety ranking very little below the song of the Chondestes grammaca. The song varies in the modulations greatly with the individual, but the same general style is preserved. At times it seemed to have a slight resemblance to the song of Bewick’s Wren, and at others to that of a Cyanospiza, and more rarely, to be the reproduction of a passage from the song of the Chondestes.

      In the early part of July, near Austin, in the cañons of the mountains, he found these birds breeding in the greatest abundance, and later in the same month a few of its nests were found on the East Humboldt Mountains. All of its nests, with hardly an exception, were placed from eighteen inches to two feet above the ground, among the thick bushes of a species of Symphoricarpus, or “snow-berry,” which grows in great abundance upon the sides of the cañons of those mountains. The maximum number of eggs was four. It was also quite a common bird in the Wahsatch Mountains, though less abundant than the P. megalonyx.

      Mr. Allen found this Finch quite numerous in Colorado Territory, and speaks of its song as very peculiar and very pleasing. It is said to resemble in no respect the eastern Towhee Finch, with which it is classed, but much more closely the group of Sparrows, so familiarly represented at the east by the White-throated, being like them in habits, song, and general aspect. It was more common among the foot-hills than on the plains. In Utah, according to Mr. Allen, this Finch begins to appear in numbers about September 20, from its breeding-haunts in the mountains.

      Dr. Coues met with this species in Arizona, but only as a spring and autumn migrant. None remained there in summer to breed, and none were found there in the winter. In its migrations it passed rapidly by Fort Whipple, being found there only during the latter part of April and the beginning of May, and during the month of September. At those seasons it appeared to him the most silent and retiring of all the Pipilos. He found it very difficult to either observe its habits or to capture it. It winters sparingly at Fort Mohave.

      Specimens of this bird were taken near Lookout Mountain by C. S. McCarthy, and at Gilmer, in Wyoming Territory, by Mr. Durkee.

      Dr. Heermann, in his Report on the birds observed on the 32d. parallel, under Lieutenant Parke, mentions first meeting with this species near Tucson. They were frequenting, in numbers, the thick undergrowth, and were seeking seeds and insects on the ground. They seemed inclined to shun observation, and always kept in the most retired situations. They were sociable among themselves, going about singly or in pairs, associated with the Poospiza bilineata and two or three other kinds of Finch. When started they fly low, diving into the bushes, and soon disappear from sight. Occasionally, until reaching El Paso, Texas, birds of this species were met with, mingling with the flocks of migrating Fringillidæ. He there procured a pair apparently just entering upon incubation.

      Instead of being suited by color, like most of the other Pipilos, to inhabit dark thickets and among dry leaves, this species is clad in a gayer livery, and seems well adapted for concealment in its summer resorts, and also among the growing vegetation of the lower country during the rainy season. Dr. Heermann found a few wintering in the Colorado Valley, and yet more at San Diego, but they left both places in March. He found them silent and shy, hiding very closely in the bushes, and feeding altogether on the ground. The only note he heard, resembled the crowing note of the California Quail.

      Among the memoranda of Mr. Xantus, made near Fort Tejon, are the two following: “4,839, nest and two eggs (of Pipilo chlorurus) found in a dry hedge in Mr. Ritchie’s garden; 5,083, nest and eggs found in a dark garden-hedge.”

      The eggs of the chlorurus are like those of no other Pipilo that I have met with. They are peculiar in shape, being nearly of an exact oval, neither end being apparently much more rounded than the other. Their ground-color is white with a bluish tint, over which is profusely diffused a cloud of fine dottings of a pinkish-drab. These markings are occasionally so fine and so thickly distributed as to give to the egg the appearance of a uniform color, or as an unspotted pinkish drab-colored egg. Occasionally the dots are deeper and larger, and more sparsely diffused.

      In considering the eggs of the Pipilos in general we find certain variations which deserve more than a passing notice. Those of erythrophthalmus, oregonus, arcticus, and megalonyx are all fringilline in their СКАЧАТЬ