Dr. Hoy informs me that he has never detected this bird within the limits of Wisconsin, though he has no doubt that they may occasionally straggle into its limits, as have many of the birds peculiar to the Missouri region.
Mr. Ridgway gives it as one of the most abundant and familiar of the Tyrannidæ in the Sacramento Valley and the fertile portions of the Great Basin. He notes their excessively quarrelsome disposition, which far exceeds that of the eastern Kingbird, for fighting among themselves seems to be their chief amusement. As many as half a dozen of these birds were sometimes noticed pitching at one another promiscuously, in their playful combats; and when a nest was disturbed, the cries of the parents invariably brought to the vicinity all the birds of this species in the neighborhood, which, as soon as gathered together, began their aerial battles by attacking each other without regard apparently to individuals, accompanying the fight by a shrill twitter, very different from the loud rattling notes of the T. carolinensis. Indeed, all the notes of the western Kingbird are very conspicuously different from those of the eastern species, being weaker, and more twittering in their character. The nesting habits, the construction of the nest, and appearance of the eggs, are, however, almost perfectly identical.
Mr. Ridgway gives an interesting account (Am. Nat., Aug., 1869) of a young bird of this species which became quite domesticated with his party in the geological survey of the 40th parallel. It had been taken about the middle of July, fully fledged, from the nest, by some Indians, and was fed with grasshoppers and flies until able to catch them for itself. When not in quest of food it remained quietly perched on Mr. Ridgway’s shoulder or his hat, or would perch on a rope extending from the top of the tent to a stake. At night it frequently roosted under an umbrella which hung outside of the tent. If permitted, it would have preferred to keep on its master’s shoulder, snuggling against his neck. In the morning it was sure to come fluttering about his head, singling him out from a dozen or more persons who lay around upon the ground. It had an insatiable appetite, and was ascertained by actual count to consume one hundred and twenty fat grasshoppers in a day. It soon learned its own name, Chippy, and always answered to the call. It followed Mr. Ridgway when on horseback, occasionally leaving to sport with other birds, but always returning to his shoulder or hat. It evidently preferred the society of the camp to that of his own race. It was once, by accident, nearly shot, and ever after held the gun in great dread. It went with Mr. Ridgway from camp to camp, continuing perfectly tame and domesticated, until, as was supposed, it fell a prey to a Hawk.
The eggs of this species are not easily distinguishable from those of the common Kingbird. They have a ground-color of a crystalline whiteness, marked with bold dashes of reddish and purplish brown, the latter fewer and faint. They are oblong in shape, are pointed at one end, and measure 1 inch in length by .70 of an inch in breadth.
Tyrannus vociferans, Swainson.
CASSIN’S FLYCATCHER.
Tyrannus vociferans, Swainson, Mon. Tyrant Shrikes in Quarterly Journal Sc. XX, Jan. 1826, 273.—Ib. Philos. Mag. I, 1827, 368.—Baird, Birds N. Am. 1858, 174, pl. xlviii.—Ib. M. B. II, Birds 8, pl. x.—Scl. Catal. 1862, 235.—Cooper, Orn. Cal. I, 1870, 314. Laphyctes vociferans, Caban. Mus. Hein. II, 77. Tyrannus cassini, Lawrence, Ann. N. Y. Lyc. N. H. V, 1852, 39, pl. iii, fig. 2 (Texas).
Sp. Char. Bill from the forehead about as long as the head. Tail even or slightly rounded. Outer five primaries attenuated; the first four abruptly and deeply emarginated; third quill longest, second and fourth a little less, first shorter than the sixth, and half an inch less than the longest. Head and neck above and on the sides rather dark bluish-ash; the throat and breast similar, and only a little paler. Rest of upper parts olive-green tinged with gray, mixed with brown on the rump; the upper tail-coverts and surface of the tail nearly black; the outer web of the external feather and the tips of all pale brown. The chin is white, in strong contrast to the dark ash of the throat; the rest of the under parts bright sulphur-yellow (the sides olivaceous), palest on the under tail-coverts and inside of wing. A concealed vermilion patch in the crown, bordered by straw-yellow. Wing-feathers brown, tinged with olive, becoming paler towards the edge. Length, 8.80; wing, 5.25; tail, 4.25.
Hab. Valley of Gila and southern California, eastward to Pecos River, Texas, and into Mexico, on table-lands; north along the Plains to Fort Laramie, south to Costa Rica. Oaxaca (Scl. P. Z. S. 1859, 383); Vera Paz (Scl. Ibis I, 121); W. Arizona (Coues, P. A. N. S. 1866, 59); Vera Cruz, hot and temp. regions, and Plateau (Sum. M. Bost. Soc. I, 557.)
The table of specific characters presented under the generic head will readily serve to distinguish this species from its near ally, T. verticalis. The white outer web of the exterior tail-feather in verticalis, compared with the brown web, only edged with whitish of the present bird, is always sufficient to separate them; while the deep ash of the jugulum, and the much lighter, more brownish shade of the wings, are entirely peculiar features.