The eggs from one nest of the Passerella schistacea measure .90 by .70 of an inch, have a ground of a light mountain-green, and are profusely spotted with blotches of a rufous-brown, generally diffused over the entire egg.
Another nest of this species, obtained in Parley’s Park, in the Wahsatch Mountains, by Mr. Ridgway, June 23, 1869, was built in a clump of willows, about two feet from the ground. The nest is two inches in height, two and a half in diameter, cavity one and a half deep, with a diameter of two. It is composed externally of coarse decayed water-grass, is lined with fine hair and finer material like the outside. The eggs, four in number, are .80 by .67 of an inch, of a very rounded oval shape, the ground-color of a pale green, blotched and marked chiefly at the larger end with brown spots of a wine-colored hue.
Passerella schistacea, Baird, Birds N. Am. 1858, p. 490 (in part; Ft. Tejon specimens). Passerella megarhynchus, Baird, Birds N. Am. 1858, p. 925 (Appendix).—Cooper, Orn. Cal. I, 222. Passerella schistacea, var. megarhynchus, Ridgway, Rept. Geol. Expl. 40th Par.
13757 ♂
Sp. Char. Similar to var. schistacea in colors, size, and general proportions; but bill enormously thick, its depth being very much greater than the distance from nostril to tip, instead of much less; color of lower mandible rosy milk-white, instead of maize-yellow. Bill, .35 from nostril, .47 deep; wing, 3.30; tail, 3.50; tarsus, .83; middle toe without claw, .63; hind claw, .50.
Hab. Sierra Nevada, from Fort Tejon north to 40° latitude (Carson City, Nevada, breeding, Ridgway).
This very remarkable variety of P. townsendi is quite local in its distribution, having been observed only in the Sierra Nevada region, as above indicated. The first specimens were brought from Fort Tejon by Mr. J. Xantus, but at what season they were found there is not indicated on the labels. Recently, specimens were procured by Mr. Ridgway at Carson City, Nev., in April, they having arrived there about the 20th of April, frequenting the ravines of the Sierra near the snow. At the same place the var. schistacea was found earlier in the spring, but among the willows along the streams in the valleys, and not met with in the mountains; and all the individuals had passed northward before those of megarhynchus arrived.
In this restricted distribution the present bird is a companion of the Melospiza melodia, var. heermanni, and the characteristics of form are the same in both as compared with their Middle Province and Northern representatives; while they both differ from the latter (townsendi of Passerella, and rufina of Melospiza) in purer, lighter, and less brown colors.
Habits. Dr. Cooper met with several individuals of this bird towards the summits of the Sierra Nevada, in September, 1863, but was unable to preserve any of them. So far as he was able to observe them, they had no song, and their habits were generally similar to those of the P. townsendi.
The Thick-billed Sparrow was found by Mr. Ridgway as a very common bird among the alder swamps in the ravines of the eastern slope of the Sierra Nevada during the summer. Near Carson City, April 25, in a swampy thicket near the streams in the level slopes, he heard, for the first time, its beautiful song, and killed a specimen in the midst of its utterance of what, he adds, was one of the most exquisitely rich utterances he ever heard. This song, he states, resembles, in richness and volume, that of the Louisiana Water Thrush (Seiurus ludovicianus), qualities in which that bird is hardly equalled by any other North American bird. They were singing in all parts of that swampy thicket, and up the ravines as far as the snow. From the nature of the place and the character of their song, they were at first supposed to be the Water Thrush, until specimens of these exquisite songsters were secured. He regards this bird as second to none of our singers belonging to this family and though in variety, sprightliness, and continuity, and also in passionate emotional character, its song is not equal to that of the Chondestes grammaca, yet it is far superior in power and richness of tone. Mr. Ridgway regards this bird as easily distinguishable from the P. schistacea, of which, however, it is only a variety. There is a total discrepancy in its notes, and while neither species is resident in the latitude of Carson City, through which both kinds pass in their migrations, the P. schistacea lingers in the spring only a short time, soon passing to the northward, while the P. megarhynchus arrives later and remains through the summer. The former makes its temporary abode among the willows along the river, while the latter breeds in the shrubbery of the mountain ravines.
Subfamily SPIZINÆ
Char. Bill variable, always large, much arched, and with the culmen considerably curved; sometimes of enormous size, and with a greater development backward of the lower jaw, which is always appreciably, sometimes considerably, broader behind than the upper jaw at its base; nostrils exposed. Tail rather variable. Bill generally black, light blue, or red. Wings shorter than in the first group. Gape almost always much more strongly bristled. Few of the species sparrow-like or plain in their appearance; usually blue, red, or black and white; except in one or two instances the sexes very different in color.
The preceding diagnosis is intended to embrace the brightly colored passerine birds of North America, different in general appearance from the common Sparrows. It is difficult to draw the line with perfect strictness, so as to separate the species from those of the preceding group, but the bill is always more curved, as well as larger, and the colors are brighter. They resemble quite closely, at a superficial glance, the Coccothraustinæ, but may be readily distinguished by absence of the projecting tufts surrounding the base of the upper mandible, shorter, more rounded wings, and longer tarsi.
The genera may be most conveniently arranged as follows:—
A. Wings decidedly longer than the tail. Eggs plain blue or white, unspotted.
a. Feet very stout, reaching nearly to the end of the tail. Species terrestrial.
Calamospiza. Bill moderate, the commissure with a deep angle posteriorly and prominent lobe behind it; anteriorly nearly straight; commissure of lower mandible with a prominent angle. Outer toe longer than the inner, both nearly as long as the posterior. Outer four primaries about equal, and abruptly longer than the rest. Tertials nearly equal to primaries. Tail-feathers broad at tips. Color: black with white spot on wing in ♂, brownish streaks in ♀. Nest on or near ground; eggs plain pale blue.
Euspiza. Bill weaker, the commissure with a more shallow angle, and much less prominent sinuation behind it; anteriorly distinctly sinuated. Outer toe shorter than inner, both much shorter than the posterior one. First primary longest, the rest successively shorter. Tertials but little longer than secondaries. Tail-feathers attenuated at tips. Color: back brown streaked with black; throat white; jugulum yellow or ashy; with or without black spot on fore neck. A yellow or white superciliary stripe. Nest on or near ground; eggs plain pale blue.
b. Feet weaker, scarcely reaching beyond lower tail-coverts; species arboreal.
Hedymeles. Upper mandible much swollen laterally. Colors: no blue; upper parts conspicuously different from the lower. Wings and tail with white patches; axillars and lining of wing yellow or red. Female streaked. Nest in a tree or bush; eggs greenish, thickly spotted.
Guiraca. Upper mandible flat laterally. Colors: ♂ deep blue, with two rufous bands on wings; no white patches on wings or tail; axillars and lining of wing blue; ♀ olive-brown without streaks. Nest in a bush; eggs plain bluish-white.
Cyanospiza. Similar in form to Guiraca, but culmen more curved, mandible more shallow, the angle and sinuations of the commissure less conspicuous. Color: ♂ more or less blue, without any bands on wing (except in C. amæna in which they are white); ♀ olive-brown. Nest in a bush; eggs plain bluish-white (except in C. ciris, in which they have