Kitabı oku: «A History of North American Birds, Land Birds. Volume 3», sayfa 6

The only characters which we find in kennicotti which cannot be recognized in asio are the smaller, more quadrate, and more rufous spots on the primaries, and more obsolete bands on the tail; but this is merely the consequence of the greater extension of the brown markings, thus necessarily contrasting the lighter spots. In these respects only does the Washington Territory specimen differ from the two typical examples before us, having the larger, more whitish, spots on primaries, and more distinct tail-bands, of asio.

Scops asio, var. kennicotti.

The Scops kennicotti must, however, be recognized as a well-marked geographical race, and, not taking into consideration any natural laws which influence changes in species, it would be very proper to recognize the validity of the present bird. If, however, the rule of which we speak will apply to others, as indeed it does to a majority of the birds of the region inhabited by the Scops kennicotti, the extreme conditions of some species of which are even more widely different than in the present instance, and which have been referred to their lighter representatives in consequence of the applicability of this law, we cannot possibly do otherwise with it.

In general appearance, size, and proportions, as well as in pattern and tints of coloration, except in their details, there is a wonderfully close resemblance in this race of S. asio to the S. semitorques, Schlegel, of Japan. Indeed, it is probable that the latter is also a mere geographical form of the same species. The only tangible points of difference are that in semitorques the jugulum is distinctly white centrally, there is a quite well-defined lighter nuchal band, with a more indistinct occipital one above it, and the pencillings on the lower parts are more delicate. The size and proportions are essentially the same; the shades of color are identical, while the markings differ only in minute detail, their pattern being essentially the same. In kennicotti the light nuchal collars are indicated, though they do not approach the distinctness shown by them in semitorques. Should they be considered as races of one species (S. asio), their differential characters may be expressed as follows:—

Var. semitorques.²⁶ A well-defined nuchal collar, of mottled pale ochraceous; jugulum immaculate white centrally. Feathers of the lower parts with their transverse pencillings growing fainter towards the middle line, which is unvariegated white, from the central jugular spot to the anal region. Wing, 6.60–7.10; tail, 3.60–3.70; culmen, .60; tarsus, 1.25–1.40; middle toe, .80–.90. (Two specimens.) Hab. Japan.

Var. kennicotti. No well-defined nuchal band; jugulum closely barred centrally; feathers of the lower parts with their transverse pencillings not growing fainter toward the middle line, which is unvariegated white only on the abdominal portion; the medial black streaks to the feathers of the lower surface much broader, and transverse pencillings rather coarser. Wing, 6.90–7.30; tail, 3.50–4.50; culmen, .60–.65; tarsus, 1.35–1.45; middle toe, .80–.90. (Three specimens.) Hab. North Pacific coast of North America from Sitka to Washington Territory, and Western Idaho.

The zoölogical characters of the different varieties of the Scops asio having been thus indicated, we proceed to consider the species as a whole, and to point out the more important features of its habits and history.

Habits. The common Mottled Owl has an extended distribution throughout the temperate portion of North America. It is also the most numerous of this family wherever found. It does not appear to have been detected in any part of the Arctic regions. Although given on the authority of Fabricius as a bird of Greenland, it is not retained in the list of Reinhardt. It was not met with by Richardson, nor is any reference made to it in any of the Arctic notes furnished by Mr. MacFarlane or others. It is quite common throughout New England, as well as in the Central, the Western, and some of the Southern States. Mr. Boardman gives it as resident, but not very common, near Calais, where it breeds. It is found near Hamilton, Canada, according to McIlwraith, but it is not common, although Dr. Hall found it quite numerous in the vicinity of Montreal. Mr. Downes does not mention its occurrence in Nova Scotia. It was found breeding by Dr. Lincecum, at Long Point, Texas. It occurs in California, and as Scops kennicotti as far to the northwest as Sitka.

The Mottled Owl is nocturnal in its habits, never appearing abroad in the daylight except when driven out by the attacks of hostile birds that have discovered it in its retreat. Its eyes cannot endure the light, and it experiences great inconvenience from such an exposure. During the day it hides in hollow trees, in dark recesses in the forests, or in dark corners of barns, and comes out from its retreat just before dark. During the night it utters a very peculiar wailing cry, not unlike the half-whining, half-barking complaints of a young puppy, alternating from high to low, intermingled with deep guttural trills. These cries, which are sometimes prolonged until after midnight, usually elicit an answer from its mate or companions, and would seem to be uttered as a call soliciting a reply from some lost associate. When kept in confinement the Mottled Owl soon becomes familiarized to its new mode of life, and rarely attempts to injure its captors, though it will at first snap its bill in a threatening manner and manifest considerable irritation on being approached or handled. In the daytime they keep secluded, appear sleepy or stupid, with half-closed eyes, but, as night approaches, become quite lively and eager for their food. They utter their nocturnal cries in confinement, the doleful sounds of which are in singular contrast with the lively and excited air of the birds as they utter them. Their flight is noiseless and gliding, and they move in a manner so nearly silent as to be hardly perceptible. They are excellent mousers, and swallow their food whole, ejecting the indigestible parts, such as hair, bones, feathers, etc.

Wilson caught an adult bird, and kept it in confinement some time. At first it was restless and attempted to escape, beating against the glass of the window repeatedly, and several times with so much violence as to stun itself. In a few days it was reconciled to its situation, and became quite tame and familiar, and in the evening was very lively, sprightly, and active.

The food of the Screech-Owl is chiefly small quadrupeds, insects, and occasionally, when they have young, small birds. They destroy a vast number of mice, beetles, and vermin, and are of great service to the agriculturist, although their services are not appreciated, and they are everywhere persecuted and hunted down without mercy or justice.

The nest of this species is usually constructed in hollow trees or stumps, most frequently in orchards in the vicinity of farm-houses, and not more than six or seven feet from the ground. Mr. Audubon states, however, that he has sometimes found them at the height of thirty or forty. To show the provident habits of this Owl in procuring for its young a great superabundance of food, Mr. Nuttall mentions finding in the hollow stump of an apple-tree, which contained a single brood of these young Owls, several Bluebirds, Blackbirds, and Song-Sparrows.

Dr. Cooper, on the other hand, relates an instance where one of these Owls resided as an inmate in a dove-cot, where it was not known to do any injury to its inmates.

The Screech-Owl can hardly be said to construct any nest, but lines the hollow in which it rears its young with a few loose leaves, dry grasses, and feathers. The eggs are usually five or six in number; they are pure white, and nearly round. Their average measurement is 1.38 inches in length by 1.19 in breadth.

In regard to the distinctive peculiarities of var. maccalli, we are in possession of but little information. Its habits probably do not essentially vary from those of the common Scops asio, which it so closely resembles in other respects, and of which it is to be regarded as a geographical race. It was first taken by Mr. E. S. Holden, near Sacramento, and described by Mr. Lawrence as the Ephialtes choliba of Vieillot. It has since been found in other parts of California, in Northern Mexico, Arizona, and on the Rio Grande. It was obtained in Tamaulipas—where it is evidently rather common—by the late Dr. Berlandier, who had also procured its eggs. A single specimen of this Owl was obtained by Mr. A. Schott in Texas, and Mr. Dresser also obtained two small Owls which he doubtfully refers to this variety,—one near San Antonio, and the other in Bandera County. Lieutenant Bendire writes that it is quite common in the vicinity of Tucson, Arizona, though Dr. Coues did not meet with it. Dr. Kennerly observed it on Bill Williams Fork, in New Mexico. It was there found living in the large Cereus giganteus so common in that region, where it occupied the deserted holes of various kinds of Woodpeckers. It rarely made its appearance during the day, and then only to show its head from the hole, ready at any moment to disappear at the approach of danger. On one occasion it was observed among some very thick bushes near the water. It does not appear to have been met with by Dr. Cooper in California, where he refers all the Owls of this genus to the common asio. A single individual, referred doubtfully to this bird, was taken by Mr. Skinner in Guatemala. The eggs of this bird, taken in Tamaulipas by Dr. Berlandier, are of nearly globular shape, of a clear, almost crystal-white color, and measure 1.13 inches in length by 0.93 of an inch in breadth. As compared with the eggs of Scops asio they are much smaller, their relative capacity being only as five to eight.

The eggs of the var. asio vary greatly in size according to their locality. Those taken in Florida are so much smaller than those from Massachusetts as almost to be suggestive of specific differences. An egg from Hudson, Mass., taken by Mr. Jillson in April, 1870, measures 1.50 by 1.30 inches, while one from Monticello, Fla., taken by Mr. Samuel Pasco, measures 1.30 by 1.15 inches. Mr. T. H. Jackson, of Westchester, Penn., informs me that he has found a nest of this Owl containing six fresh eggs, on the 5th of April.

Scops flammeola, Licht

FEILNER’S OWL

Scops flammeola, Licht. Mus. Berol. Nomenclat. p. 7, 1854.—Kaup, Trans. Zoöl. Soc. IV, 226.—Schlegel, Mus. de Pays-Bas, Oti, p. 27.—Sclat. Proc. Zoöl. Soc. 1858, 96.—Scl. & Salv. P. Z. S. 1868, 57; Exot. Orn. VII, 99, pl. l, July, 1868.—Gray, Hand List, I, 47, 1869.—Elliot, Illust. Birds Am. I, pl. xxviii.—Coues, Key, 1872, 203.

Sp. Char. Adult (42,159, Orizaba Mountains, “rare,” February 3, 1865; Professor F. Sumichrast). Ground-color above pale cinereous, this overlaid on the top of the head, nape, and back by a brownish-olive shade, the ash showing pure only on the borders of the crown and on the wing-coverts and scapulars; the whole upper surface transversely mottled with white and blackish, the latter in the form of fine zigzag lines and a splash along the shaft, this expanding transversely near the end of the feather; the white is in the form of larger transverse spots, these largest across the nape. Outer webs of the scapulars fine light orange-rufous (becoming white beneath the surface), bordered terminally with black. Coverts along the lower edge of the wing spotted with pale rufous; outer webs of the several lower feathers of the middle and secondary wing-coverts with a large conspicuous spot of white. Secondaries crossed by four well-defined narrow pale ochraceous bands; primary coverts transversely spotted with the same; primaries with about five transverse series of very large white spots on the outer webs, the spots approaching ochraceous next the shaft and towards the end of the feather. Tail profusely mottled like the back, and crossed with about five ragged, badly defined pale bands, the last of which is not terminal. Ear-tufts inconspicuous.

Eyebrow white, feathers bordered with blackish; eye encircled with rusty rufous; lores strongly tinged with the same; cheeks, ear-coverts, neck, and jugulum with numerous transverse dusky bars upon a grayish-white ground. Facial circle rusty-rufous spotted with black; throat with a tinge of rufous; chin white.

Scops flammeola.

Lower parts, in general, white; each feather with a black shaft-stripe, this throwing off bars in pairs, across the feather; the medial stripes are very broad, forming longitudinal spots on the breast, and have here an external rufous suffusion; lower tail-coverts very sparsely marked. Tibiæ and tarsi white, with very sparse transverse dusky spots. Lining of the wing plain yellowish-white; bars on under surface of primaries very obsolete, except basally. Wing-formula, 3=4; 5, 2–6; 1=8. Wing, 5.40; tail, 2.45; culmen, .35; tarsus, .87; middle toe, .55.

Young (first full, but imperfect plumage: ♂, 24,172, Fort Crook, North California, August 23, 1860; John Feilner). Wings and tail as in the adult (last pale band of latter apparently terminal). Whole head and body with numerous, about equal, transverse bands of dusky and grayish-white; the two colors about equal, but on lower parts both are much wider and more distinct than above the white gradually increasing posteriorly. Breast and outer webs of scapulars with a rusty tinge, the latter scarcely variegated. Eyebrow white, feathers bordered with dusky; eye-circle and ear-coverts bright rusty-rufous; lores much tinged with the same. No facial circle. Wing, 5.50; tail, 2.70.

Hab. Guatemala and central Mexico, northward (along Sierra Nevada) to Fort Crook; California (breeding).

Habits. This is essentially a Mexican and Central American species, occurring among the mountains of Mexico and thence to Guatemala. One individual, however, the only one as yet recorded as taken in the United States, was obtained at Fort Crook by Captain John Feilner, and is now in the collection of the Smithsonian Institution. This was a young bird, evidently raised in that locality, and apparently showing that the species breeds in that vicinity. It has been taken also at Orizaba, in the State of Vera Cruz, Mexico. Nothing is known as to any peculiarities of habit. These are not probably different from those of the asio.

Genus BUBO, Dum

Gen. Char. Size varying from medium to very large; head with or without ear-tufts. Bill black; iris yellow. Two to four outer quills with their inner webs emarginated. Third or fourth quill longest. Bill very robust, the lower mandible nearly truncated and with a deep notch near the end; cere gradually ascending basally (not arched) or nearly straight, not equal to the culmen. Tail short, a little more than half the wing, slightly rounded. Ear-conch small, simple, without operculum; the two ears symmetrical.

Subgenera

Bubo. Two to three outer quills with their inner webs emarginated. Ear-tufts well developed; loral feathers not hiding the bill, and the claws and terminal scutellæ of the toes exposed. Lower tail-coverts not reaching the end of the tail. (Type, B. maximus.)

Nyctea. Four outer quills with their inner webs emarginated. Ear-tufts rudimentary; loral feathers hiding the bill, and claws and entire toes concealed by long hair-like feathers. Lower tail-coverts reaching to end of the tail. (Type, N. scandiaca.)

The species of this genus are mostly of very large size, two of them (B. maximus and N. scandiaca) being the largest birds of the family. They are nearly cosmopolitan, and are most numerous in the Eastern Hemisphere.

Subgenus BUBO, Dum

Bubo, Duméril, 1806. (Type, Strix bubo, Linn. = B. maximus, Sibb.)

Rhinostrix, Kaup, 1849. (Type, Strix mexicana, Gmel. = B. mexicanus, Ridgw.)

Rhinoptynx, Kaup, and Rhenoptynx, Kaup, 1857. (Same type.)

Species and Races

1. B. virginianus. Lower parts transversely barred with black, and without longitudinal stripes. Above without longitudinal stripes on the anterior portions.

a. A conspicuous patch of white on the jugulum; lining of the wing immaculate, or only faintly barred. Wing, 14.00–16.00; tail, 8.00–10.00; culmen, 1.10–1.20; tarsus, 2.00–2.20; middle toe, 1.95–2.10.

Rufous tints of the plumage prevailing; face dingy rufous. Hab. Atlantic Province of North America … var. virginianus.

Lighter tints of the plumage prevailing; face dirty or fulvous white. All the colors lighter. Hab. Western Province of United States, and interior regions of British America. Upper Mississippi Valley in winter (Wisconsin, Hoy; Pekin, Illinois, Museum, Cambridge) … var. arcticus.

Dusky tints of the plumage prevailing; face dull grayish, barred with dusky. All the colors darker, chiefly brownish-black and grayish-white, with little or no rufous. Hab. Littoral regions of northern North America, from Oregon northward, and around the northern coast to Labrador … var. pacificus.

b. No conspicuous patch of white on the jugulum, which, with the lining of the wing, is distinctly barred with blackish. Wing, 12.00; tail, 7.50; culmen, 1.00; tarsus, 2.10; middle toe, 1.85.

Colors much as in var. virginianus, but more densely barred beneath, the dark bars narrower and closer together. Hab. South America … var. magellanicus.²⁷

2. B. mexicanus.²⁸ Lower parts longitudinally striped with black, and without transverse bars. Above with longitudinal stripes on the anterior portions. Wing, 11.20–12.00; tail, 6.00–6.50; culmen, .90; tarsus, 2.00; middle toe, 1.95. Hab. Middle and South America generally.

Subgenus NYCTEA, Stephens

Nyctea, Stephens, Cont. Shaw’s Zoöl. XIII, 62, 1826. (Type Strix nyctea, Linn. N. Scandiaca, Linn.).

Species and Races

1. N. scandiaca. Adult. Color pure white, more or less barred transversely with clear dusky, or brownish-black. Male sometimes almost pure white. Downy young, sooty slate-color. Wing, 16.00–18.00; tail, 9.00–10.00.

Dusky bars sparse, narrow, umber-brown. Hab. Northern parts of Palæarctic Realm … var. scandiaca.²⁹

Dusky bars more numerous, broader, and clear brownish-black. Hab. Northern parts of Nearctic Realm … var. arctica.

Bubo virginianus, var. virginianus, Bonap

GREAT HORNED OWL

Asio bubo virginianus, Briss. Orn. I, 484, 17, 1760. Strix virginiana, Gmel. Syst. Nat. I, 287, 1788.—Lath. Ind. Orn. p. 52; Syn. I, 119; Supp. I, 40; Gen. Hist. I, 304.—Daud. Tr. Orn. II, 210, pl. xiii.—Wils. Am. Orn. pl. l, f. 1.—Bonap. Ann. Lyc. N. Y. II, 37 and 435; Isis, 1832, p. 1139.—Aud. Birds Am. pl. lxi, 1831; Orn. Biog. I, 313.—Thomps. Nat. Hist. Vermont, pl. lxv.—Peab. Birds Mass. p. 87. Bubo virginianus, Bonap. List, p. 6, 1838; Consp. Av. p. 48.—Jard. (Wils.) Am. Orn. II, p. 257.—De Kay, Zoöl. N. Y. II, 24, pl. x, f. 2.—Nutt. Man. Orn. p. 124.—Max. Cab. Jour. 1853, VI, 23.—Kaup, Tr. Zoöl. Soc. IV, 1859, 241.—Coues, Key, 1872, 202. Bubo virginianus atlanticus, Cassin, Birds of Cal. & Tex. I, 178, 1854.—Birds N. Am. 1858, 49 (under B. virginianus). Otus virginianus, Steph. Zoöl. XIII, ii, 57, 1836. Ulula virginiana, James. (Wils.), Am. Orn. I, 100, 1831. Strix virginiana, α, Lath. Gen. Hist. I, 306, 1821. Strix bubo, δ, Lath. Ind. Orn. p. 52, 1790.—Shaw, Zoöl. VII, 215. Strix maximus, Bart. Trav. Carol. p. 285, 1792. Bubo ludovicianus, Daud. Tr. Orn. II, 210, 1800. Bubo pinicola, Vieill. Ois. Am. Sept. pl. xix, 1807; Enc. Méth. p. 1282.

6886 ½ ½

Bubo virginianus.

Sp. Char. Adult ♂ (12,057, Philadelphia; C. Drexler). Bases of all the feathers yellowish-rufous, this partially exposed on the head above and nape, along the scapulars, on the rump, and sides of the breast. On the upper surface this is overlaid by a rather coarse transverse mottling of brownish-black upon a white ground, the former rather predominating, particularly on the head and neck, where it forms broad ragged longitudinal stripes (almost obliterating the transverse bars), becoming prevalent, or blended, anteriorly. The lower feathers of the scapulars, and some of the lower feathers of the middle and secondary wing-coverts, with inconspicuous transverse spots of white. On the secondaries the mottling is finer, giving a grayish aspect, and crossed with eight sharply defined, but inconspicuous, bands of mottled dusky; primary coverts with the ground-color very dark, and crossed with three or four bands of plain blackish, the last terminal, though fainter than the rest; ground-color of the primaries more yellowish, the mottling more delicate; they are crossed by nine transverse series of quadrate dusky spots. The ground-color of the tail is pale ochraceous (transversely mottled with dusky), becoming white at the tip, crossed by seven bands of mottled blackish, these about equalling the light bands in width; on the middle feathers the bands are broken and confused, running obliquely, or, in places, longitudinally. Outer webs of ear-tufts pure black; inner webs almost wholly ochraceous; eyebrows and lores white, the feathers with black shafts; face dingy rufous; eye very narrowly encircled with whitish; a crescent of black bordering the upper eyelid, and confluent with the black of the ear-tufts. Facial circle continuous black, except across the foreneck; chin, throat, and jugulum pure immaculate white, to the roots of the feathers. Beneath, white prevails, but the yellowish-rufous is prevalent on the sides of the breast, and shows as the base color wherever the feathers are disarranged. The sides of the breast, sides, and flanks have numerous sharply defined narrow transverse bars of brownish-black; anteriorly these are finer and more ragged, becoming coalesced so as to form conspicuous, somewhat longitudinal, black spots. On the lower tail-coverts the bars are distant, though not less sharply defined. The abdomen medially is scarcely maculate white. Legs and toes plain ochraceous-white.

6886 ⅓

Bubo virginianus.

Wing-formula, 2, 3–4–1, 5. Wing, 14.50; tail, 8.20; culmen, 1.10; tarsus, 2.00; middle toe, 2.00.

♀ (12,065, Maryland; R. J. Pollard). General appearance same as the male. Black blotches on head above and nape less conspicuous, the surface being mottled like the back, etc.; primary coverts with three well-defined narrow pure black bands; primaries with only six bands, these broader than in the male; secondaries with only five bands; tail with but six dark bands, these very much narrower than the light ones. Tibiæ and tarsi with sparse transverse bars of dusky. Wing-formula, 3, 2, 4–1=5. Wing, 16.00; tail, 9.00; culmen, 1.20; tarsus, 2.20; middle toe, 2.10.

Young. Wings and tail as in adult. Downy plumage of head and body ochraceous, with detached, rather distant, transverse bars of dusky. (12,062, Washington, D. C., May 20, 1859; C. Drexler.)

Hab. Eastern North America, south of Labrador; west to the Missouri; south through Atlantic region of Mexico to Costa Rica; Jamaica (Gosse).

Localities: (?) Oaxaca (Scl. 1859, 390; possibly var. arcticus); Guatemala (Scl. Ibis, I. 222); Jamaica (Gosse, 23); Texas (Dresser, Ibis, 1865, 330, breeds); Costa Rica (Lawr. IX, 132).

Specimens from the regions indicated vary but little, the only two possessing differences of any note being one (58,747,³⁰ ♂) from Southern Illinois, and one (33,218, San Jose; J. Carmiol) from Costa Rica. The first differs from all those from the eastern United States in much deeper and darker shades of color, the rufous predominant below, the legs and crissum being of quite a deep shade of this color; the transverse bars beneath are also very broad and pure black. This specimen is more like Audubon’s figure than any other, and may possibly represent the peculiar style of the Lower Mississippi region. The Costa Rica bird is remarkable for the predominance of the rufous on all parts of the plumage; the legs, however, are whitish, as in specimens from the Atlantic coast of the United States. These specimens cannot, however, be considered as anything else than merely local styles of the virginianus, var. virginianus.

Bubo virginianus, var. arcticus, Swains

WESTERN GREAT HORNED OWL

? Strix wapacuthu, Gmel. Syst. Nat. 1789, p. 290. Strix (Bubo) arctica, Swains. F. B. A. II, 1831, 86. Heliaptex arcticus, Swains. Classif. Birds, I, 1837, 328; Ib. II, 217. Bubo virginianus arcticus, Cass. Birds N. Am. 1858, 50 (B. virginianus).—Blakiston, Ibis, III, 1861, 320. Bubo virginianus, var. arcticus, Coues, Key, 1872, 202. Bubo subarcticus, Hoy, P. A. N. S. VI, 1852, 211. Bubo virginianus pacificus, Cass. Birds Cal. & Tex. 1854, and Birds N. Am. 1858 (B. virginianus, in part only). Bubo magellanicus, Cass. Birds Cal. & Tex. 1854, 178 (not B. magellanicus of Lesson!). Bubo virginianus, Heerm. 34.—Kennerly, 20.—Coues, Prod. (P. A. N. S. 1866, 13).—Blakiston, Ibis, III, 1861, 320. ? Wapacuthu Owl, Pennant, Arctic Zoöl. 231.—Lath. Syn. Supp. I, 49.

Char. Pattern of coloration precisely like that of var. virginianus, but the general aspect much lighter and more grayish, caused by a greater prevalence of the lighter tints, and contraction of dark pencillings. The ochraceous much lighter and less rufous. Face soiled white, instead of deep dingy rufous.

♂ (No. 21,581, Camp Kootenay, Washington Territory, August 2, 1860). Wing, 14.00; tail, 8.60; culmen, 1.10; tarsus, 2.00. Tail and primaries each with the dark bands nine in number; legs and feet immaculate white. Wing-formula, 3, 2=4–5–1.

♀ (No. 10,574, Fort Tejon, California). Wing, 14.70; tail, 9.50; culmen, 1.10; tarsus, 2.10; middle toe, 2.00. Tail and primaries each with seven dark bands; legs transversely barred with dusky. Wing-formula, 3, 4, 2–5–1, 6.

Hab. Western region of North America, from the interior Arctic districts to the table-lands of Mexico. Wisconsin (Hoy); Northern Illinois (Pekin, Mus. Cambridge); Lower California; ? Orizaba, Mexico.

Localities: (?) Orizaba (Scl. P. Z. S. 1860, 253); Arizona (Coues, P. A. N. S. 1866, 49).

The above description covers the average characters of a light grayish race of the B. virginianus, which represents the other styles in the whole of the western and interior regions of the continent. Farther northward, in the interior of the fur countries, the plumage becomes lighter still, some Arctic specimens being almost as white as the Nyctea scandiaca. The B. arcticus of Swainson was founded upon a specimen of this kind, and it is our strong opinion that the Wapecuthu Owl of Pennant (Strix wapecuthu, Gmel.) was nothing else than a similar individual, which had accidentally lost the ear-tufts, since there is no other discrepancy in the original description. The failure to mention ear-tufts, too, may have been merely a neglect on the part of the describer.

Bubo virginianus, var. pacificus, Cass

Bubo virginianus pacificus, Cassin, Birds N. Am. 1858, 49. Bubo virginianus, var. pacificus, Coues, Key, 1872, 202. Bubo virginianus, Coop. & Suckley, P. R. Rept. XII, ii, 1860, 154.—Lord, Pr. R. A. S. IV, III (British Columbia). ? Dall & Bannister, Tr. Chicago Ac. I, 1869, 272 (Alaska).—? Finsch, Abh. Nat. III, 26 (Alaska).

Sp. Char. The opposite extreme from var. arcticus. The black shades predominating and the white mottling replaced by pale grayish; the form of the mottling above is less regularly transverse, being oblique or longitudinal, and more in blotches than in the other styles. The primary coverts are plain black; the primaries are mottled gray and plain black. On the tail the mottling is very dark, the lighter markings on the middle feathers being thrown into longitudinal splashes. Beneath, the black bars are nearly as wide as the white, fully double their width in var. arcticus. The legs are always thickly barred. The lining of the wings is heavily barred with black. Face dull grayish, barred with dusky; ear-tufts almost wholly black.

♂ (45,842, Sitka, Alaska, November, 1866; Ferd. Bischoff). Wing-formula, 3, 2=4–5–1, 6. Wing, 14.00; tail, 8.00; culmen, 1.10; tarsus, 2.05; middle toe, .95.

Face with obscure bars of black; ochraceous of the bases of the feathers is distinct. There are seven black spots on the primaries, eight on the tail; on the latter exceeding the paler in width.

♀ (27,075, Yukon River, mouth Porcupine, April 16, 1861; R. Kennicott). Wing-formula, 3, 2=4–5–1, 6. Wing, 16.00; tail, 9.80; culmen, 1.15; tarsus, 2.00. Eight black spots on primaries, seven on tail.

Hab. Pacific coast north of the Columbia; Labrador. A northern littoral form.

A specimen from Labrador (34,958, Fort Niscopec, H. Connolly) is an extreme example of this well-marked variety. In this the rufous is entirely absent, the plumage consisting wholly of brownish-black and white, the former predominating; the jugulum and the abdomen medially are conspicuously snowy-white; the black bars beneath are broad, and towards the end of each feather they become coalesced into a prevalent mottling, forming a spotted appearance.

Another (11,792, Simiahmoo, Dr. C. B. Kennerly) from Washington Territory has the black even more prevalent than in the last, being almost continuously uniform on the scapulars and lesser wing-coverts; beneath the black bars are much suffused. In this specimen the rufous tinge is present, as it is in all except the Labrador skin.

Habits. The Great Horned Owl has an extended distribution throughout at least the whole of North America from ocean to ocean, and from Central America to the Arctic regions. Throughout this widely extended area it is everywhere more or less abundant, except where it has been driven out by the increase of population. In this wide distribution the species naturally assumes varying forms and exhibits considerable diversities of coloring. These are provided with distinctive names to mark the races, but should all be regarded as belonging to one species, as they do not present any distinctive variation in habit.

Sir John Richardson speaks of it as not uncommon in the Arctic regions. It is abundant in Canada, and throughout all parts of the United States. Dr. Gambel met with it also in large numbers in the wooded regions of Upper California. Dr. Heermann found it very common around Sacramento in 1849, but afterwards, owing to the increase in population, it had become comparatively rare. Dr. Woodhouse met with it in the Indian Territory, though not abundantly. Lieutenant Couch obtained specimens in Mexico, and Mr. Schott in Texas.