Part 50

In the summer of 1870 a pair built their nest in a dwarf pear-tree, within a few rods of my house. They were at first very shy and would not permit themselves to be seen at their work, and suspended all labor when any one was occupied near their chosen tree. Soon after the construction of the nest two Cowbird’s eggs were deposited, which I removed, although the female only laid two of her own before she began to sit upon them. By this time she became more familiar, and would not leave her nest unless I attempted to lay hands upon her. She made no complaints in the manner of the White-eyed, nor sought to attack like the Yellow-throated, but kept within a few feet, and watched me with eager eyes, until I left her. Unfortunately, her nest was pillaged by a Black-billed Cuckoo, and I was unable to observe her feed her young, as I had hoped to do.

The eggs are of an oblong-oval shape, moderately pointed at one end, and of a white ground, less crystalline than in the other species of its kind. They are spotted pretty uniformly over the entire egg with dots of dark red and reddish-brown. They are usually five in number.

Lanivireo solitarius, var. cassini, BAIRD.

CASSIN’S VIREO.

_Vireo cassini_, XANTUS, Pr. A. N. S. Phil. May, 1858, 117.—BAIRD, Birds N. Am. 1858, 340, pl. lxxviii, fig. 1; Review Am. B. I, 1865, 347 (sub _V. solitaria_), RIDGWAY.

SP. CHAR. Third and fourth quills nearly equal, fifth shorter, second longer than seventh. Spurious primary very narrow, falcate, acute; less than one third the second quill, and a little more than one fourth the third. Above, including edges of wing and tail-feathers, clear olive-green, becoming dusky ashy on the top and sides of head. Beneath fulvous-white, tinged with ill-defined olive-green on the sides (scarcely on the crissum). Two broad bands on the wing-coverts and the outer edges of the innermost secondaries greenish-white; the outer edge of outer tail-feather, with a broad ring round the eye, extending to a frontal band, dull white. Length about 5 inches; wing, 2.75; tail, 2.30.

HAB. Fort Tejon, Cal. (XANTUS); West Humboldt Mountains, Nevada (RIDGWAY).

Since the type of this variety was obtained, two other specimens (Nos. 53,418 ♀ and 53,419 ♂, September, 1867; R. Ridgway) have been secured by the United States Geological Survey of the 40th Parallel, in command of Mr. Clarence King, in the West Humboldt Mountains, Nevada. These specimens are even more different from true _solitarius_ than is the type of this race, showing that it is really distinct, as a variety. In the same thickets at the same season, perfectly typical specimens of _V. solitarius_ were obtained; the latter having, no doubt, come from their more northern summer home on their passage southward into Mexico.

In the Humboldt Mountain specimens the crown shows no trace of ash, and is even darker and more brownish than the back. In fact, the relation of the _V. cassini_ to _V. solitaria_ is an almost exact parallel to that of _V. josephæ_ to _V. gilvus_, as far as coloration is concerned, in each case the extreme being widely different, but connected by specimens showing intermediate characters.

Nothing is known of the habits of this race.

Lanivireo solitarius, var. plumbeus, COUES.

LEAD-COLORED VIREO.

_Vireosylvia plumbea_, COUES, Pr. A. N. Sc. Phila. 1866 (Fort Whipple, near Prescott, Arizona).—COOPER, Orn. Cal. 1, 1870, 119.—ELLIOT, Illust. Birds N. A. I, vii. _V._ (_Lanivireo_) _plumbea_, BAIRD, Rev. 349.

SP. CHAR. (No. 37,011.) Whole upper parts and sides of head uniform plumbeous; the lower part of the back with a faint wash of olivaceous. A white line from bill to and around eye; a dusky line from corner of eye to bill. Sides of breast and flanks plumbeous, paler than the back; the flanks very slightly tinged with olive-green. Rest of under parts white; the axillars ashy, edged with white. Wings above with two conspicuous white bands; the innermost quills edged externally and the longer ones internally with white, the latter edged externally with light ash. Bill and legs dark plumbeous, “Iris hazel.” Tail-feathers narrowly edged all round with white, narrowest internally, and increasing from central to lateral feathers. Upper tail-coverts clear ash.

[Line drawing: _Vireosylvia plumbea._ 37010]

As the specimen in finest plumage (described above) is moulting the quills, the measurements are taken from another (37,010). In this the first quill is not quite one third the second, which equals the sixth, the third and fourth longest.

(No. 37,010.) Fresh specimen: Total length, 6.10; expanse of wings, 10.80. Prepared specimen: Total length, 5.75; wing, 3.25; tail, 2.70; difference between tenth and longest quill, .95; exposed portion of first primary, .75, of second, 2.34, of longest, third (measured from exposed base of first primary), 2.54; length of bill from forehead, .55, from nostril, .31, along gape, .70; tarsus, .75; middle toe and claw, .60, claw alone, .21; hind toe and claw, .50, claw alone, .23.

HAB. Southern Rocky Mountains; East Humboldt Mountains, Nevada (RIDGWAY). In winter to Colima, Mexico.

While the pattern of coloration is precisely similar to that of _Lanivireo solitarius_, the difference in the colors appears to be occasioned merely by removing, as it were, the yellow stain, which on the plumbeous produces the olive-green tinge, and exists in a purer tint along the sides, leaving, essentially, only clear plumbeous and pure white; there is, however, in the most typical specimens, always a faint tinge of green on the rump, and a stain of yellow along the side. Though identical with _solitarius_ in most of its proportions, the wings and tail are considerably longer than in the average of that form.

There are many specimens from the Rocky Mountains and westward that are so decidedly intermediate between _solitarius_ and _plumbeus_, that, considering also the lack of essential difference in form and coloration between the two, we do not hesitate to consider them, along with _cassini_ and _propinquus_ (see page 373), as races of a single species, of which each is the representative in a particular region. Thus, _V. solitarius_ breeds in the Eastern Province of the United States (and possibly in the Western, following the same route far to the northward that many Eastern birds pursue in straggling westward), and migrates in winter into Middle America as far as Guatemala; those which breed in the Northwest pass directly southward, thus crossing the region where _cassini_ and _plumbeus_ breed, which accounts for their being obtained together. _V. cassini_ is the representative on the opposite side of the continent; but the history of its migrations is yet obscure. _V. plumbeus_ is the Middle Province and Rocky Mountain representative, breeding alone in that region, and in winter migrating southward through Western Mexico as far as Colima. _V. propinquus_ is another permanent race, but a local one, being resident in the country where found, though mixed in winter with visitors of _solitarius_ from the North.

HABITS. Of this very recently discovered race, very little is at present known. It was first described by Dr. Coues, who met with it in Arizona, near Fort Whipple. He says it is especially abundant in the northern part of that Territory. It was by far the most common Vireo at Fort Whipple, where it is a summer resident, arriving there about the 15th of April and remaining until October.

It was found to be common about Laramie Peak, by Dr. R. Hitz, and was also met with in winter on the plains at Colima, Mexico, by Xantus.

It was seen in the summers of 1868 and 1869, by Mr. Ridgway, among the cedar and nut-pine woods on the slopes and among the brushwood in the cañons of the East Humboldt Mountains, being most partial to the former situations. There, too, it undoubtedly breeds, as in the latter part of July young birds, unable to fly, were met with by him. He also states that the common notes of this Vireo very closely resemble those of the Western Wood Wren (_Troglodytes parkmanni_).

Lanivireo flavifrons, BAIRD.

YELLOW-THROATED VIREO.

_Vireo flavifrons_, VIEILL. Ois. Am. Sept. I, 1807, 85, pl. liv.—AUD. Orn. Biog. II, 1834, pl. cxix.—IB. Birds. Am. IV, pl. ccxxxviii.—CASSIN, Pr. A. N. Sc. 1851, 149.—SCLATER, P. Z. S. 1857, 227 (Vera Cruz); 1860, 257 (Orizaba).—SCLATER & SALVIN, Ibis, I, 1859, 12 (Guatemala).—CAB. Jour. III, 468 (Cuba; winter).—GUNDLACH, Cab. Jour. 1861, 324 (Cuba; rare).—CAB. Jour. 1860, 405 (Costa Rica). _Vireo_ (_Lanivireo_) _flav._ BAIRD, Birds N. Am. 1858, 341. _Vireosylvia_ (_Lanivireo_) _flavifrons_, BAIRD, Rev. 346. _Muscicapa sylvicola_, WILS. Am. Orn. II, 1810, 117, pl. vii, f. 3.

[Line drawing: _Vireosylvia flavifrons._ 2217]

SP. CHAR. (No. 28,390.) Head and neck above and on sides, with interscapular region, bright olive-green. Lower back, rump, tail, and wing-coverts ashy. Wings brown, with two white bands across the coverts, the outer edges of inner secondaries, and inner edges of all the quills, with inside of wing, white. Outer primaries edged with gray, the inner with olive. Tail-feathers brown, entirely encircled by a narrow edge of white. Under parts to middle of body, a line from nostrils over eye, eyelids, and patch beneath the eye (bordered behind by the olive of neck) bright gamboge-yellow; rest of under parts white, the flanks faintly glossed with ashy. Lores dusky. Bill and legs plumbeous-black.

No spurious primary evident: second quill longest; first a little shorter than third.

Length, 5.80; wing, 3.00; tail, 2.00; difference of longest and innermost quills, .90; tarsus, .73.

HAB. Eastern United States, south to Costa Rica. Veragua (SALVIN). Very rare in Cuba.

Autumnal birds, perhaps more especially the young, are more glossed with olivaceous, which invades the ashy portions, and tinges the white.

HABITS. All the older ornithological writers, in speaking of the Yellow-throated Vireo, repeat each other in describing it as peculiarly attracted to the forest, seeking its solitudes and gleaning its food chiefly among its topmost branches. Such has not been my experience with this interesting and attractive little songster. I have found no one of this genus, not even the _gilva_, so common in the vicinity of dwellings, or more familiar and fearless in its intercourse with man. All of its nests that I have ever met with have been built in gardens and orchards, and in close proximity to dwellings, and they have also been exclusively in comparatively low positions. In one of the most recent instances a pair of these birds built one of their beautiful moss-covered nests in a low branch of an apple-tree that overhung the croquet-ground, within a few rods of my house. It was first noticed in consequence of its bold little builder flying in my face whenever I approached too near, even before its nest contained any eggs. The grounds were in frequent use, and the pair were at first a good deal disturbed by these constant intrusions, but they soon became reconciled to their company, and would not leave their position, even though the game was contested immediately under their nest, which was thus often brought within a foot of the heads of the players. Before this nest was quite finished, the female began her duties of incubation. Her assiduous mate was constantly engaged at first in completing the external ornamentation of the nest with lichens and mosses, and then with a renewal of his interrupted concerts of song. These duties he varied by frequent captures of insects, winged and creeping, most of which he duly carried to his mate. His song was varied, sweet, and touchingly beautiful. Less powerful than the notes of several others of its family, except those of the _Warbling_, I know of none more charming.

These birds reach New England about the 10th of May, and usually have their nests constructed early in June. Their habits, in all essential respects, are the same as those of all its family. They are somewhat confiding and trustful of man, are readily approached, and soon become so well acquainted with those among whom they have a home as to fearlessly come to the windows of the house in pursuit of spiders or flies, and even to enter them. In the latter case they cannot readily make their exit, and soon lose their self-possession, beating their heads against the walls and ceiling in vain attempts to get out, unless caught and released. In one instance a young bird, that had entered my barn-chamber, became so entangled in cobwebs, around his wings and feet, as to be unable to escape again. When taken in the hand, and his meshes one by one picked out from about his feet and quills, he was very docile, made no resistance or outcry, nor any attempt to escape, until he was entirely freed from his bonds, although it required some time and care to accomplish it. When entirely freed from these clogs, and permitted to go, he flew away very deliberately to a short distance, and occupied himself with dressing his disordered plumage.

The nest of this species is also a pendent structure, and hemispherical in shape. It may always be readily distinguished from any other nest of this family by the profusion of lichens and mosses with which its outer portion is adorned and covered, giving it the appearance of a large moss-covered knot.

In most of the towns in the vicinity of Boston this species, though not abundant, is quite common. Their nests, built usually in low and rather conspicuous positions for birds of this kind, occur most frequently in gardens and orchards. One of these, found suspended from a moss-covered branch of an apple-tree in Roxbury, may be taken as typical of its kind. Its rim was firmly bound around the fork of a branch by a continuation of the materials that form the outside of the nest itself. These are an interweaving of spiders’-webs, and silky threads from insect cocoons, largely intermingled with mosses and lichens, and thus made to conform closely in appearance to the moss-grown bark of the tree. The under portion of the nest is strengthened by long strips of the inner bark of the wild grape. Within is an inner nest made of fine grassy stems and bark. It forms exactly a half-sphere in shape, is symmetrical, and is very thoroughly made. Its diameter is four, and its height two and one fourth inches.

Mr. Nuttall describes a nest of this bird, found by him suspended from the forked twig of an oak, near a dwelling-house, as coated over with green lichens, attached very artfully by a slender string of caterpillars’ silk, the whole afterwards tied over by almost invisible threads of the same, so nicely done as to appear to be glued on. The whole fabric was thus made to resemble an accidental knot of the tree, grown over with moss. Another nest, observed by the same writer, was fixed on the depending branches of a wild cherry, and was fifty feet from the ground. So lofty a position as this is probably very unusual. I have never met with any higher than ten feet from the ground.

The food of this Vireo is chiefly insects, and in the breeding-season is altogether so. Later in the season they mingle with these various kinds of small berries.

The eggs of this species vary from .95 to .88 of an inch in length, and from .65 to .60 in breadth. Their ground-color is white, often with a very perceptible tint of roseate when fresh. In this respect they differ in a very marked manner from the eggs of any other of this genus, except, perhaps, the _barbatula_, and may thus always be very easily recognized. They are more or less boldly marked with blotches of a dark roseate-brown, also peculiar to the eggs of this species, though varying greatly in their size and depth of color.

This Vireo winters, in great numbers, in Central America, and was largely represented in the collection of Dr. Van Patten from Guatemala. It was also found at Pirico, in Colombia, South America, by Mr. C. W. Wyatt. It occurs in abundance as far to the west as Grinnell, Iowa, where Mr. W. H. Parker found it to be a very common summer resident.

SUBGENUS VIREO, VIEILL.

_Vireo_, VIEILL., Ois. Am. Sept. I, 1807, 83. (Type, _Muscicapa noveboracensis_, GM.)

[Line drawing: _Vireo noveboracensis._ 29248]

CHAR. Wings short and rounded, a little longer than the tail, equal to it, or shorter. First primary distinct and large, from two fifths to half or more the length of the second, shorter or not longer than the eighth.

The characters of _Vireo_ are essentially those of _Vireosylvia_; the bill, however, is shorter; the first quill always present, better developed, sometimes more than half the second. The wings are shorter, and more rounded; the tarsi usually longer. The, sections are as follows:—

Vireo. Wings pointed; first quill less than half the second, which is about equal to seventh or eighth, and decidedly longer than the tenth primary and the secondaries. Type, _V. noveboracensis_.

Vireonella. Wings rounded, scarcely longer than the tail; the first quill half as long as the second (or more than half), which is not longer than the tenth primary and secondaries, or even less. Bill and feet generally much stouter than the preceding. Type, _V. gundlachi_.

None of the species of _Vireonella_ are found in the United States.

Species.

COMMON CHARACTERS. All the species olivaceous or ashy above, beneath whitish, or olivaceous-yellow. Wings with light bands. A light stripe from bill over the eye, but not beyond it, except in _carmioli_. Iris brown, as far as known, except in _V. noveboracensis_, where it is white.

A. Two conspicuous light bands on wing.

_a._ Sexes different. Whole lore white.

1. V. atricapillus. Above olive-green, outer edges of tail-feathers bright yellowish-green; wing-bands greenish-white. Sides olivaceous-yellow. _Male._ Head and neck (except lore, orbital ring, chin, and throat) deep black; lower parts pure white medially. _Female_ with the black replaced by dull slate; lower parts ochraceous-white medially. Wing, 2.30; tail, 1.80; tarsus, .68; bill, from nostril, .24. _Hab._ Southern Texas; Mazatlan, Mexico.

_b._ Sexes alike. Lore dusky, with light mark above it.

2. V. carmioli.[78] Above brownish olive-green. Beneath, with supra-loral stripe, orbital ring, and light markings on the wings, light ochrey-yellow more whitish on the throat. Wing, 2.55; tail, 2.00; tarsus, .66; bill, .26. _Hab._ Costa Rica.

3. V. noveboracensis. Above olive-green, ashy across the nape. Supra-loral stripe and orbital ring deep yellow. Beneath ashy-white on throat, purer white on abdomen; sides, and a tinge across the breast, light yellow. Iris white. Wing, 2.40; tail, 2.00; tarsus, .63; bill, .26. _Hab._ Eastern Province of United States, south (in winter) to Guatemala (and Bogota?); very rare in Cuba; abundant and resident in Bermuda.

4. V. huttoni. Above grayish-olive, more olive-green toward tail. Below pale grayish-buff. Orbital ring very broad, yellowish-white. Wing, 2.50; tail, 2.05; tarsus, .67; bill, .24. _Hab._ California; in winter, Western Mexico to Oaxaca.

B. Only one band on wing, and this indistinct.

5. V. belli. Above ashy-olive, more virescent posteriorly. Markings on side of head not well defined. Below dull white, with a slight buffy tinge, strongly stained with yellow on sides and flanks. Upper feathers of middle row of wing-coverts passing into paler at tip, producing an indication of an anterior band. Wing, 2.20; tail, 1.80; tarsus, .69; bill, .25. _Hab._ Plains between the Mississippi Valley and the Rocky Mountains, from Dakota to Texas; in winter south to Tehuantepec, Mexico.

6. V. pusillus. Above grayish-ash, very slightly tinged with olive on rump. Below dull white, ashy laterally, the flanks with the slightest possible tinge of yellow. Wing, 2.30; tail, 2.20; tarsus, .69; bill, .24, .13 deep. _Hab._ Arizona; Cape St. Lucas, Lower California; California north to Sacramento City.

7. V. vicinior. Above bluish-ash, below ashy-white, scarcely more ashy laterally. Lores entirely ashy-white. Wing, 2.60; tail, 2.40; tarsus, .67; bill, .26, .18 deep. _Hab._ Fort Whipple, Arizona.

Vireo atricapillus, WOODHOUSE.

BLACK-CAPPED VIREO.

_Vireo atricapillus_, WOODHOUSE, Pr. A. N. Sc. 1852, 60 (San Pedro, Tex.).—IB. Sitgreaves’s Rep. 1853, 75, pl. i, Birds.—CASSIN, Illust. 1854, 153, pl. xxiv.—BAIRD, Birds N. Am. 1858, 337; Rev. 353.—COOPER, Orn. Cal. 1, 1870, 121.

[Line drawing: _Vireo atricapillus._ 6818]

SP. CHAR. (No. 6,818.) Top and sides of head and neck black; rest of upper parts olive-green. Wing and tail feathers almost black on their upper surface, the quills and rectrices edged with olive (paler on the exterior primaries), the wing-coverts with two greenish-white bands on a blackish ground. Broad line from bill to and around eye (not meeting on forehead) with under parts white; the sides of body olivaceous; the axillars and inner wing-coverts (perhaps crissum) yellowish. Bill black; feet plumbeous; iris bright red. First quill less than half the second, which about equals the tenth; third little shorter than fourth (longest).

_Female._ With the black replaced by dull slate; lower parts ochraceous-white medially. Possibly a distinct species (Mazatlan).

(No. 6,818.) Fresh specimen: Total length, 4.75; expanse of wings, 7.25; wing from carpal joint, 2.12. Prepared specimen: Total length, 4.10; wing, 2.25; tail, 1.95.

HAB. Southern border of Western Texas; Mazatlan.

The black head of this species, as far as known, makes it unique in the genus. It is extremely rare, but three or four specimens being known.

We refer to this species a specimen—probably a female—obtained at Mazatlan, on the western coast of Mexico, in April, by Colonel Grayson (S. I., No. 55,046). This specimen differs from those from Texas in having the black of the head replaced by a dull dark slate-color, the olive above rather less virescent, and the lower parts not pure white, but somewhat buffy. As all the other essential characters are identical, there being in both the white space covering the whole lore, and orbital ring interrupted on top,—features not seen in any other species,—we have little hesitation in considering them the same species; which opinion is moreover strengthened by the fact, that among the Texas specimens, all with black caps, there are no females.

HABITS. Of the general history and habits of this rare species very little is known. It was first met with by Dr. Woodhouse, on the 26th of May, 1851, in Western Texas. This was on the Rio San Pedro, within ten miles of its source. He found it among some cedars, and was attracted by its very singular notes. It was in continual motion, like a Wood Warbler, and was by him at first supposed to be one of those birds. He obtained two specimens, both of which proved to be males.

Mr. John H. Clark, the naturalist of the Mexican Boundary Commission, likewise found this species in Texas, and not far from the same locality in which it was discovered by Dr. Woodhouse. His attention also was drawn to the bird by its shrill discordant chirp, which it uttered incessantly in its pursuit of insects. Three specimens only were seen, and all of them at one locality, the valley of the Rio San Pedro, to which it seemed to be confined. It was not at all shy, and showed no concern when Mr. Clark approached within a few rods. Its constant motion, hopping incessantly from branch to branch, made it a matter of some difficulty to procure specimens. It was found in June, and the single specimen shot by Mr. Clark was also a male.