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

Their eggs vary greatly in size; the largest measures 1.08 inches by .82 of an inch, the smallest .90 by .65. They average about an inch in length and .77 of an inch in breadth. They are oval in shape, have a light-bluish ground, and are marbled, lined, and blotched with markings of light and dark purple and black. These markings are almost wholly about the larger end, and are very varying.

Agelaius phœniceus, var. gubernator, Bon

CRIMSON-SHOULDERED BLACKBIRD

Psarocolius gubernator, Wagler, Isis, 1832, IV, 281. Agelaius gubernator, Bon. List, 1838.—Ib. Conspectus, 1850, 430.—Aud. Syn. 1839, 141.—Ib. Birds Am. IV, 1842, 29, pl. ccxv.—Newberry, P. R. R. Rep. VI, IV, 1857, 86.—Baird, Birds N. Am. 1858, 529.—Heerm. X, S, 53 (nest).—Cooper, Orn. Cal. I, 1870, 263. Icterus (Zanthornus) gubernator, Nuttall, Man. I, (2d ed.,) 1840, 187.

Sp. Char. Bill rather shorter than the head, without any longitudinal sulci, but with faint traces of transverse ones at the base of the lower jaw. Tail rounded. First quill nearly equal to the fourth.

Male. Throughout of a lustrous velvety-black, with a greenish reflection. The lesser coverts rich crimson; the middle coverts brownish-yellow at the base, but the exposed portion black. Wing, 5.00; tail, 3.90; culmen, .90; tarsus, 1.10.

Female. Nearly uniform dark slaty-brown; an indistinct superciliary stripe, an indication of a maxillary stripe, and blended streaks on chin and throat delicate pale peach-blossom pink, this on the jugulum interrupted by dusky streaks running in longitudinal series; lesser wing-coverts tinged with dark wine-red. Wings with just appreciable paler edges to the feathers. Wing, 4.20; tail, 3.20.

Hab. Pacific Province of United States, and Western Mexico, to Colima; Western Nevada (Ridgway). ? Xalapa (Sclater, 1859, 365).

In the female and all the immature stages, the dusky beneath is largely in excess of the light streaks; the superciliary light stripe is badly defined, and there is no trace of a median light stripe on the crown. These characters distinguish this race from phœniceus; while the rounded instead of square tail, and brown instead of pure white border to middle wing-coverts, distinguish it from corresponding stages of tricolor.

Habits. The Crimson-shouldered Blackbird was first met with by Mr. Townsend, on the Columbia River, where two specimens were obtained, which were described by Mr. Audubon, in his Synopsis, in 1839. No information in regard to its habits, distribution, or nesting, was obtained by either Mr. Townsend or by his companion, Mr. Nuttall.

This species, or local race, whichever it is considered, occurs from the Columbia River south throughout California. It is given doubtingly as also from the Colorado River, but Dr. Cooper was only able to detect there the common phœniceus. According to the observations of that careful naturalist, this species is chiefly found in the warmer interior of California, Santa Cruz being the only point on the coast where he has met with it. He found it in scattered pairs, in May, throughout the Coast Range, even to the summits, where there are small marshes full of rushes, in which they build. He has not been able to detect any difference between the habits and notes of this bird and the common Redwing. The fact that specimens with entirely red shoulders seem limited to the middle of the State, or are rare along the coast, while most of those on the coast closely resemble the eastern bird, Dr. Cooper regards as suggestive of its being only a local race, though said to occur also in Mexico.

During the summer this species is said to emit a variety of sweet and liquid notes, delivered from some tree near its favorite marsh. These are also sometimes mingled with jingling and creaking sounds.

Dr. Suckley, in his Report on the Zoölogy of Washington Territory, expresses the opinion, that, although a specimen of this bird is reported as having been taken by Townsend on the Columbia, it is very rarely found so far north, as he never met with it in Washington Territory, and has never been able to hear of any other specimen having been found there.

Dr. Kennerly, in his Report on the birds observed in the survey of the 35th parallel, states that during the march along Bill Williams Fork, and along the Great Colorado and the Mohave Rivers, this species was found quite numerous. They were more abundant still along the creeks and swampy grounds that were passed as they approached the settlements of California. Large flocks could there be seen whirling around in graceful curves, like dark clouds, chattering joyfully as they moved along, or settling as a black veil on the topmost branches of some tree, indulging loudly in their harsh music.

In his Report of the birds observed in the survey under Lieutenant Williamson, Dr. Heermann mentions finding this species abundant, and, in the fall season, as associated with Molothrus pecoris and A. tricolor. Its nest he found built in the willow bushes and tussocks of grass above the level of the water, in the marshes. There were but a few pairs together, and in this respect they differ from the tricolor, which prefers dry situations near water, and which congregate by thousands while breeding. The nest was composed of mud and fine roots, and lined with fine grasses. The eggs, four in number, he describes as pale blue, dashed with spots and lines of black.

Neither this nor the tricolor was detected by Dr. Coues in Arizona.

These Blackbirds were found by Mr. Ridgway abundant in the marshy regions of California, but they were rarely met with east of the Sierra Nevada. A few individuals were collected in Nevada in the valley of the Truckee. A few pairs were found breeding among the tulé sloughs and marshes. The nests found in the Truckee Reservations were built in low bushes in wet meadows.

A nest procured by Dr. Cooper from the summit of the Coast Range was built of grass and rushes, and lined with finer grass. The eggs are described as pale greenish-white, with large curving streaks and spots of dark brown, mostly at the large end. They are said to measure one inch by .75 of an inch.

Eggs of this variety in my cabinet, taken in California by Dr. Heermann, are of a rounded-oval shape, nearly equally obtuse at either end, and varying in length from .90 of an inch to an inch, and in breadth from .70 to .80. Their ground-color is a light blue, fading into a bluish-white, marked only around the larger end with waving lines of dark brown, much lighter in shade than the markings of the phœniceus usually are.

Agelaius tricolor, Bonap

RED AND WHITE SHOULDERED BLACKBIRD

Icterus tricolor, “Nuttall,” Aud. Orn. Biog. V, 1839, I, pl. ccclxxxviii.—Nuttall, Man. I, (2d ed.,) 1840, 186. Agelaius tricolor, Bon. List, 1838.—Aud. Syn. 1839, 141.—Ib. Birds Am. IV, 1842, 27, pl. ccxiv.—Heerm. X, S, 53 (nest).—Baird, Birds N. Am. 1858, 530.—Cooper, Orn. Cal. 1, 1870, 265.

Sp. Char. Tail nearly even. Second and third quills longest; first a little shorter than the fourth. Bill slender, not half as high as long.

Male. General color uniform lustrous velvet-black, with a strong silky-bluish reflection. Shoulders and lesser wing-coverts brownish-red, of much the color of venous blood; the median coverts of a well-defined and nearly pure white, with sometimes a brownish tinge. Wing, 4.90; tail, 3.70; culmen, .97; tarsus, 1.13.

Female. General color dusky slaty-brown, faintly variegated on head also by lighter streaks; middle wing-coverts broadly and sharply bordered with pure white. An obsolete superciliary and maxillary stripe of grayish-white. Beneath grayish-white for anterior half, with narrow streaks of dusky, this color gradually prevailing posteriorly, the sides, flanks, and crissum being nearly uniform dusky. Wing, 4.25; tail, 3.20.

Hab. Pacific Province of United States, from Columbia River southward, not yet found out of California and Oregon.

Immature males sometimes have the white on the wing tinged with brownish-yellow, as in A. phœniceus. The red, however, has the usual brownish-orange shade so much darker and duller than the brilliantly scarlet shoulders of the other species, and the black has that soft bluish lustre peculiar to the species. The relationships generally between the two species are very close, but the bill, as stated, is slenderer and more sulcate in tricolor, the tail much more nearly even; the first primary longer, usually nearly equal to or longer than the fourth, instead of the fifth.

Two strong features of coloration distinguish the female and immature stages of this species from gubernator and phœniceus. They are, first, the soft bluish gloss of the males, both adult and immature; and secondly, the clear white and broad, not brown and narrow, borders to the middle wing-coverts.

Habits. The Red and White shouldered Blackbird was seen by Mr. Ridgway among the tulé in the neighborhood of Sacramento City, where it was very abundant, associating with the A. phœniceus and gubernator, and the Yellow-headed Blackbird. The conspicuous white stripe on the wings of this bird renders it easily recognizable from the other species, where they are all seen together. Mr. Ridgway is of the opinion that the notes of the white-shouldered species differ very considerably from those of the two other Blackbirds.

Dr. Heermann found this a very abundant bird in California. He states that during the winter of 1852, when hunting in the marshes of Suisan Valley, he had often, on hearing a dull, rushing, roaring noise, found that it was produced by a single flock of this species, numbering so many thousands as to darken the sky for some distance by their masses. In the northern part of California he met with a breeding-place of this species that occupied several acres, covered with alder-bushes and willow, and was in the immediate vicinity of water. The nests, often four or five in the same bush, were composed of mud and straw, and lined with fine grasses. The eggs he describes as dark blue, marked with lines and spots of dark umber and a few light purple dashes. Dr. Heermann, at different times, fell in with several other breeding-places of this species, similarly situated, but they had all been abandoned, from which he inferred that each year different grounds are resorted to by these birds for the purposes of incubation.

Dr. Kennerly obtained a specimen of this bird on the Colorado River, in California, December, 1854. Dr. Cooper is of the opinion that it is, nevertheless, a rare species in that valley. The latter found them the most abundant species near San Diego and Los Angeles, and not rare at Santa Barbara. North of the last place they pass more into the interior, and extend up as far as Klamath Lake and Southern Oregon.

They are to be seen in considerable flocks even in the breeding-season. Their song, Dr. Cooper states, is not so loud and is more guttural than are those of the other species. Their habits are otherwise very similar, and they associate, in fall and winter, in immense flocks in the interior, though often also found separate.

These birds were first obtained by Mr. Nuttall near Santa Barbara, in the month of April. They were very common there, as well as at Monterey. He observed no difference in their habits from those of the common Redwing, except that they occurred in much larger flocks and kept apart from that species. They were seldom seen, except in the near suburbs of the towns. At that time California was in the possession of Mexico, and its inhabitants were largely occupied in the slaughter of wild cattle for the sake of the hides. Mr. Nuttall found these birds feeding almost exclusively on the maggots of the flesh-flies generated in the offal thus created. They were in large whirling flocks, and associated with the Molothri, the Grakles, the Redwings, and the Yellow-headed Blackbirds. They kept up an incessant chatter and a discordant, confused warble, much more harsh and guttural than even the notes of the Cow Blackbird.

Two eggs of this species, obtained by Dr. Heermann in California, and now in my cabinet, measuring an inch in length by .67 of an inch in breadth, are more oblong in shape than the preceding, but nearly equally obtuse at either end. They are similar in ground-color to the phœniceus, but are of a slightly deeper shade of blue, and are marked around one end with a ring of dark slaty-brown, almost black, lines, and irregular oblong blotches.

Genus XANTHOCEPHALUS, Bonap

Xanthocephalus, Bonap. Conspectus, 1850, 431. (Type, Icterus icterocephalus, Bonap.)

Xanthocephalus icterocephalus.

3912

Gen. Char. Bill conical, the length about twice the height; the outlines nearly straight. Claws all very long; much curved; the inner lateral the longest, reaching beyond the middle of the middle claw. Tail narrow, nearly even, the outer web scarcely widening to the end. Wings long, much longer than the tail; the first quill longest.

This genus differs from typical Agelaius in much longer and more curved claws, even tail, and first quill longest, instead of the longest being the second, third, or fourth. The yellow head and black body are also strong marks.

Xanthocephalus icterocephalus, Baird

YELLOW-HEADED BLACKBIRD

Icterus icterocephalus, Bonap. Am. Orn. I, 1825, 27, pl. iii.—Nutt. Man. I, 1832, 176.—Ib., (2d ed.,) 187 (not Oriolus icterocephalus, Linn.). Agelaius icterocephalus, Cabanis, Mus. Hein. 1851, 188. Icterus (Xanthornus) xanthocephalus, Bonap. J. A. N. Sc. V, II, Feb. 1826, 222.—Ib. Syn. 1828, 52. Icterus xanthocephalus, Aud. Orn. Biog. V, 1839, 6, pl. ccclxxxviii. Agelaius xanthocephalus, Swainson, F. Bor.-Am. II, 1831, 281.—Bon. List, 1838.—Aud. Syn. 1839, 140.—Ib. Birds Am. IV, 1842, 24, pl. ccxiii.—Newberry, Zoöl. Cal. and Or. Route; Rep. P. R. R. Surv. VI, IV, 1857, 86.—Max. Cab. J. VI, 1858, 361.—Heerm. X, S, 52 (nest). Agelaius longipes, Swainson, Phil. Mag. I, 1827, 436. Psarocolius perspicillatus, “Licht.” Wagler, Isis, 1829. VII, 753. Icterus perspicillatus, “Licht. in Mus.” Wagler, as above. Xanthocephalus perspicillatus, Bonap. Consp. 1850, 431. Icterus frenatus, Licht. Isis, 1843, 59.—Reinhardt, in Kroyer’s Tidskrift, IV.—Ib. Vidensk. Meddel. for 1853, 1854, 82 (Greenland). Xanthocephalus icterocephalus, Baird, M. B. II, Birds, 18; Birds N. Am. 1858, 531.—Cooper, Orn. Cal. I, 1870, 267.

Sp. Char. First quill nearly as long as the second and third (longest), decidedly longer than the fourth. Tail rounded, or slightly graduated. General color black, including the inner surface of wings and axillaries, base of lower mandible all round, feathers adjacent to nostrils, lores, upper eyelids, and remaining space around the eye. The head and neck all round; the forepart of the breast, extending some distance down on the median line, and a somewhat hidden space round the anus, yellow. A conspicuous white patch at the base of the wing formed by the spurious feathers, interrupted by the black alula.

Xanthocephalus icterocephalus.

Female smaller, browner; the yellow confined to the under parts and sides of the head, and a superciliary line. A dusky maxillary line. No white on the wing. Length of male, 10 inches; wing, 5.60; tail, 4.50.

Hab. Western America from Texas, Illinois, Wisconsin, and North Red River, to California, south into Mexico; Greenland (Reinhardt); Cuba (Cabanis, J. VII, 1859, 350); Massachusetts (Maynard, D. C. Mass. 1870, 122); Volusia, Florida (Mus. S. I.); Cape St. Lucas.

The color of the yellow in this species varies considerably; sometimes being almost of a lemon-yellow, sometimes of a rich orange. There is an occasional trace of yellow around the base of the tarsus. Immature males show every gradation between the colors of the adult male and female.

A very young bird (4,332, Dane Co., Wis.) is dusky above, with feathers of the dorsal region broadly tipped with ochraceous, lesser and middle wing-coverts white tinged with fulvous, dusky below the surface, greater coverts very broadly tipped with fulvous-white; primary coverts narrowly tipped with the same. Whole lower parts unvariegated fulvous-white; head all round plain ochraceous, deepest above.

Habits. The Yellow-headed Blackbird is essentially a prairie bird, and is found in all favorable localities from Texas on the south to Illinois and Wisconsin, and thence to the Pacific. A single specimen is recorded as having been taken in Greenland. This was September 2, 1820, at Nenortalik. Recently the Smithsonian Museum has received a specimen from New Smyrna, in Florida. In October, 1869, a specimen of this bird was taken in Watertown, Mass., and Mr. Cassin mentions the capture of several near Philadelphia. These erratic appearances in places so remote from their centres of reproduction, and from their route in emigration, sufficiently attest the nomadic character of this species.

They are found in abundance in all the grassy meadows or rushy marshes of Illinois and Wisconsin, where they breed in large communities. In swamps overgrown with tall rushes, and partially overflowed, they construct their nests just above the water, and build them around the stems of these water-plants, where they are thickest, in such a manner that it is difficult to discover them, except by diligent search, aided by familiarity with their habits.

In Texas Mr. Dresser met with a few in the fall, and again in April he found the prairies covered with these birds. For about a week vast flocks remained about the town, after which they suddenly disappeared, and no more were seen.

In California, Dr. Cooper states that they winter in large numbers in the middle districts, some wandering to the Colorado Valley and to San Diego. They nest around Santa Barbara, and thence northward, and are very abundant about Klamath Lake. They associate with the other Blackbirds, but always keep in separate companies. They are very gregarious, even in summer.

Dr. Cooper states that the only song the male attempts consists of a few hoarse, chuckling notes and comical squeakings, uttered as if it was a great effort to make any sound at all.

Dr. Coues speaks of it as less numerous in Arizona than at most other localities where found at all. He speaks of it as a summer resident, but in this I think he may have been mistaken.

In Western Iowa Mr. Allen saw a few, during the first week in July, about the grassy ponds near Boonesboro’. He was told that they breed in great numbers, north and east of that section, in the meadows of the Skunk River country. He also reports them as breeding in large numbers in the Calumet marshes of Northern Illinois.

Sir John Richardson found these birds very numerous in the interior of the fur countries, ranging in summer as far to the north as the 58th parallel, but not found to the eastward of Lake Winnipeg. They reached the Saskatchewan by the 20th of May, in greater numbers than the Redwings.

Through California, as well as in the interior, Mr. Ridgway found the Yellow-headed Blackbird a very abundant species, even exceeding in numbers the A. phœniceus, occurring in the marshes filled with rushes. This species he found more gregarious than the Redwing, and frequently their nests almost filled the rushes of their breeding-places. Its notes he describes as harsher than those of any other bird he is acquainted with. Yet they are by no means disagreeable, while frequently their attempts at a song were really amusing. Their usual note is a deep cluck, similar to that of most Blackbirds, but of a rather deeper tone. In its movements upon the ground its gait is firm and graceful, and it may frequently be seen walking about over the grassy flats, in small companies, in a manner similar to the Cow Blackbird, which, in its movements, it greatly resembles. It nests in the sloughs, among the tulé, and the maximum number of its eggs is four.

Mr. W. J. McLaughlin of Centralia, Kansas, writes (American Naturalist, III, p. 493) that these birds arrive in that region about the first of May, and all disappear about the 10th of June. He does not think that any breed there. During their stay they make themselves very valuable to the farmers by destroying the swarms of young grasshoppers. On the writer’s land the grasshoppers had deposited their eggs by the million. As they began to hatch, the Yellow-heads found them out, and a flock of about two hundred attended about two acres each day, roving over the entire lot as wild pigeons feed, the rear ones flying to the front as the insects were devoured.

Mr. Clark met with these birds at New Leon, Mexico. They were always in flocks, mingled with two or three of its congeneric species. They were found more abundant near the coast than in the interior. There was a roost of these birds on an island in a lagoon near Fort Brown. Between sunset and dark these birds could be seen coming from all quarters. For about an hour they kept up a constant chattering and changing of place. Another similar roost was on an island near the mouth of the Rio Grande.

Dr. Kennerly found them very common near Janos and also near Santa Cruz, in Sonora. At the former place they were seen in the month of April in large flocks. He describes them as quite domestic in their habits, preferring the immediate vicinity of the houses, often feeding with the domestic fowls in the yards.

Dr. Heermann states that these birds collect in flocks of many thousands with the species of Agelaius, and on the approach of spring separate into smaller bands, resorting in May to large marshy districts in the valleys, where they incubate. Their nests he found attached to the upright stalks of the reeds, and woven around them, of flexible grasses, differing essentially from the nests of the Agelaii in the lightness of their material. The eggs, always four in number, he describes as having a ground of pale ashy-green, thickly covered with minute dots of a light umber-brown.

Mr. Nuttall states that on the 2d of May, during his western tour, he saw these birds in great abundance, associated with the Cowbird. They kept wholly on the ground, in companies, the sexes separated by themselves. They were digging into the earth with their bills in search of insects and larvæ. They were very active, straddling about with a quaint gait, and now and then whistling out, with great effort, a chuckling note, sounding like ko-kuk kie-ait. Their music was inferior even to the harsh notes of M. pecoris.

Several nests of this species, procured in the marshes on the banks of Lake Koskonong, in Southern Wisconsin, were sent me by Mr. Kumlien; they were all light, neat, and elegant structures, six inches in diameter and four in height. The cavity had a diameter of three and a depth of two and a half inches. The base, periphery, and the greater portion of these nests were made of interwoven grasses and sedges. The grasses were entire, with their panicles on. They were impacted together in masses. The inner portions of these nests were made of finer materials of the same. They were placed in the midst of large, overflowed marshes, and were attached to tall flags, usually in the midst of clumps of the latter, and these were so close in their growth that the nests were not easily discovered. They contained, usually, from five to six eggs. These are of an oblong-oval shape, and measure 1.02 inches in length by .70 of an inch in breadth. Their ground-color is of a pale greenish-white, profusely covered with blotches and finer dottings of drab, purplish-brown, and umber.

Genus STURNELLA, Vieillot

Sturnella, Vieillot, Analyse, 1816. (Type, Alauda magna, L.)

Sturnella magna.

1303

Sturnella magna.

Gen. Char. Body thick, stout; legs large, toes reaching beyond the tail. Tail short, even, with narrow acuminate feathers. Bill slender, elongated; length about three times the height; commissure straight from the basal angle. Culmen flattened basally, extending backwards and parting the frontal feathers; longer than the head, but shorter than tarsus. Nostrils linear, covered by an incumbent membranous scale. Inner lateral toe longer than the outer, but not reaching to basal joint of middle; hind toe a little shorter than the middle, which is equal to the tarsus. Hind claw nearly twice as long as the middle. Feathers of head stiffened and bristly; the shafts of those above extended into a black seta. Tertials nearly equal to the primaries. Feathers above all transversely banded. Beneath yellow, with a black pectoral crescent.

The only species which we can admit is the S. magna, though under this name we group several geographical races. They may be distinguished as follows:—

Species and Varieties

1. S. magna. Above brownish, or grayish, spotted and barred with black; crown divided by a median whitish stripe; side of the head whitish, with a blackish streak along upper edge of the auriculars. Beneath more or less yellowish, with a more or less distinct dusky crescent on the jugulum. Sides, flanks, and crissum whitish, streaked with dusky; lateral tail-feathers partly white. Adult. Supraloral spot, chin, throat, breast, and abdomen deep gamboge-yellow; pectoral crescent deep black. Young. The yellow only indicated; pectoral crescent obsolete. Length, about 9.00 to 10.50 inches. Sexes similar in color, but female much smaller.

A. In spring birds, the lateral stripes of the vertex either continuous black, or with black largely predominating; the black spots on the back extending to the tip of the feather, or, if not, the brown tip not barred (except in winter dress). Yellow of the throat confined between the maxillæ, or just barely encroaching upon their lower edge. White of sides, flanks, and crissum strongly tinged with ochraceous.

a. Pectoral crescent much more than half an inch wide.

Wing, 4.50 to 5.00; culmen, 1.20 to 1.50; tarsus, 1.35 to 1.55; middle toe, 1.10 to 1.26 (extremes of a series of four adult males). Lateral stripe of the crown continuously black; black predominating on back and rump (heavy stripes on ochraceous ground). Light brown serrations on tertials and tail-feathers reaching nearly to the shaft (sometimes the terminal ones uninterrupted, isolating the black bars). Hab. Eastern United States … var. magna.

Wing, 3.75 to 4.30; culmen, 1.15 to 1.30; tarsus, 1.50 to 1.75; middle toe, 1.10 to 1.25. (Ten adult males!) Colors similar, but with a greater predominance of black; black heavily prevailing on back and rump, and extending to tip of feathers; also predominates on tertials and tail-feathers. Hab. Mexico and Central America … var. mexicana.³¹

Wing, 4.45; culmen, 1.62; tarsus, 1.50; middle toe, 1.20. (One specimen). Colors exactly as in last. Hab. Brazil … var. meridionalis.³²

b. Pectoral crescent much less than half an inch wide.

Wing, 3.90 to 4.10; culmen, 1.25 to 1.35; tarsus, 1.40 to 1.55; middle toe, 1.00 to 1.20. (Three adult males.) Colors generally similar to magna, but crown decidedly streaked, though black predominates; ground-color above less reddish than in either of the preceding, with markings as in magna. Pectoral crescent about .25 in breadth. Hab. Cuba … var. hippocrepis.³³

B. In spring birds, crown about equally streaked with black and grayish; black spots of back occupying only basal half of feathers, the terminal portion being grayish-brown, with narrow bars of black; feathers of the rump with whole exposed portion thus barred. Yellow of the throat extending over the maxillæ nearly to the angle of the mouth.

Wing, 4.40 to 5.05; culmen, 1.18 to 1.40; tarsus, 1.30 to 1.45. (Six adult males.) A grayish-brown tint prevailing above; lesser wing-coverts concolor with the wings (instead of very decidedly more bluish); black bars of tertials and tail-feathers clean, narrow, and isolated. White of sides, flanks, and crissum nearly pure. Hab. Western United States and Western Mexico … var. neglecta.

In magna and neglecta, the feathers of the pectoral crescent are generally black to the base, their roots being grayish-white; one specimen of the former, however, from North Carolina, has the roots of the feathers yellow, forbidding the announcement of this as a distinguishing character; mexicana may have the bases of these feathers either yellow or grayish; while hippocrepis has only the tips of the feathers black, the whole concealed portion being bright yellow.

In mexicana, there is more of an approach to an orange tint in the yellow than is usually seen in magna, but specimens from Georgia have a tint not distinguishable; in both, however, as well as in hippocrepis, there is a deeper yellow than in neglecta, in which the tint is more citreous.

As regards the bars on tertials and tail, there is considerable variation. Sometimes in either of the species opposed to neglecta by this character there is a tendency to their isolation, seen in the last few toward the ends of the feathers; but never is there an approach to that regularity seen in neglecta, in which they are isolated uniformly everywhere they occur. Two specimens only (54,064 California and 10,316 Pembina) in the entire series of neglecta show a tendency to a blending of these bars on the tail.

Magna, mexicana, meridionalis and hippocrepis, are most similar in coloration; neglecta is most dissimilar compared with any of the others. Though each possesses peculiar characters, they are only of degree; for in the most widely different forms (neglecta and mexicana) there is not the slightest departure from the pattern of coloration; it is only a matter of extension or restriction of the several colors, or a certain one of them, that produces the differences.

Each modification of plumage is attended by a still greater one of proportions, as will be seen from the diagnoses; thus, though neglecta is the largest of the group, it has actually the smallest legs and feet; with nearly the same general proportions, magna exceeds it in the latter respects (especially in the bill), while mexicana, a very much smaller bird than either, has disproportionally and absolutely larger legs and feet united with the smallest size otherwise in the whole series. Meridionalis presents no differences from the last, except in proportions of bill and feet; for while the latter is the smallest of the series, next to neglecta, it has a bill much exceeding that of any other.