BIRDS—CORVIDAE—PICICORVUS COLUMBIANUS. 573 
Comparative measurements of species. 
: | | | > 2 .. | 3 Z 
Z om | | |. 12 \28/22 aE ae 
= Species. Locality. wi a4 Fa C) 2|_3 4 | sp Specimen 
= a | = = 4 | wils@ = = | measured. 
= o | = = 5 ara || vet os Pt st | 
2 R = Be | & a |Re|e Ea < | 
| | | 
4461 | Picicorvus columbianus .| Cascade mountains ..)...... 12.601 Sreaiets 7.70 | 5.16 | 1.36 | 1.84 | 0.51 | 1.73 | 1.80 | 1.03 | 0.56 | Skin. -.seee 
8895 |.....-dO..0.: 0000.00. ....| Rawhide peak, Neb.. Q | 11,36)......| 7.03 | 4.73 | 1.42 | 1.46 | 0.52 | 1.68 | 1.73 | 1.06 | 0.60 | SkKin..... o 
| | 
GOs) |iicicicseis OW cise cciesian dO. cece| eve. soe sAOse caveseesee|seceee| 12.50) 21,50) 7.12 |...... Ierstetatate| | atesereists)|e'a?s ctags seinen |enssies [eeeeee|s siseea | DTCSH sama . 
8468 | Gymnokitta cyanocephala| 75 miles west of Al. .....+) 9.66) eneees | 5.88 | 4.70 | 1.46 | 1.12 | 0.36 1.34 | 1.40 | 0.84 | 0.44 | Skin. ...... 
buquerque. | | | | | 
GOs tsiieresd dO aeauidoare dO avec: |e ceccese O0rncverssnece|sesan 10,00) 18,00 6.00 |...... fee fneeeeceee| aihaisfe (ie rato Setaratare | accetotare Fresh...... 
| | | | | 
PICICORVUS COLUMBIANUS, Bon. 
Clarke’s Crow. 
Corvus columbianus, Witson, Am. Orn. III, 1811, 29; pl. xx.—Bon. Obs. Wilson, 1824, No. 38.—Is. Syn. 1828, 
57.—Nourra.u, I, 1832, 218. 
Nucifraga columbiana, Aun. Orn. Biog. 1V, 1838, 459 ; pl. 362.—Is. Syn. 1839, 156.—Is. Birds Amer. IV, 1842, 
127; pl. 235.—Bow List, 1838—Nuvrrauz, Man, I, 2ded 251. 
Picicorvus columbianus, Bonar. Consp. 1850, 384.—Newserry, P. R. R. Rep. VI, 1v, 1837, 83. 
** Corvus megonyx, WAGLER.”’ 
Sp. Cu—Tail rounded or moderately graduated, the closed wings reaching nearly to its tip. Fourth quill longest ; secon 
considerably shorter than the sixth. General color bluish ash, changing on the nasal feathers, the forehead, sides of head, 
(especially around the eye,) and chin, to white. The wings, including their inner surface, greenish black, the secondaries and 
tertials, except the innermost, broadly tipped with white ; tail white, the inner web of the fifth feather and the whole of the sixth, 
with the upper tail coverts, greenish black. The axillars plumbeous black. Bill and feet black. 
{ ength of male, (fresh,) 12 inches; wing, 7; tail, 4.30; tarsus, 1.20. 
Hab.—F rom Rocky mountains to Pacific. East to Fort Kearney. 
The tail of this species is nearly even, or but slightly rounded, the lateral feathers being 
about .20 of an inch shorter than the other white ones. Sometimes, however, the middle black 
feathers project beyond the rest for nearly half an inch. 
There is considerable variation in the size of this species, as well as a striking difference in the 
length of the bill. Thus, in 4460, from the Cascade mountains, the bill is nearly two inches long, 
slender and.attenuated, exceeding by half an inch that of 8239. The length is 12.50 inches ; 
wing, 7.50; tail, 4.65. The general color is sometimes quite pale bluish ash, becoming appre- 
ciably lighter on the head. The female is quite similar, 
List of specimens. 
Catal.| Sex. Locality. When col- | Whence obtained. Orig’!| Collected by— ‘Length. | Stretch | Wing. Remarks. 
No. lected. No. | of wings. 
8472 | CG | Milk river, Up. Mo.........! Sept. 2,1853] Gov. Stevens..... ..e6 Dr. Suckley...e0.| 1.75 | 21.50 | 7.12 | rcescccersccceseeees 
8240 | © | 30 miles east of Ft. Kearney.) Oct. 24,1857] W.M. Magraw... 222 | Dr. Cooper .. | 12.25) 22.00 | 7.75 | Billand teet black. 
BOSS lee dosdOraeeee calasinwatesecaellasemeudOacoas (teases Wor etoesnel 2 | 22.00] 7.75 
es! Sept. 15.0.2: | Lit. Warren. cesscleccees 20,00 | 7.00 
Bees 21.50 | 7.00 
«| June * 21.50 | 7.25 
+ Sept. 
| Sept. 
Raw Hide Peak, Neb.. . Sept. 
Rocky mountains..... -| June 16,1834] 8S. F. Baird.. 
Medicine Bow, Neb... + July 26,1857 | Lt. Bryan.. 
Mimbres to Rio Grande.....'.... seee eeeleiele| (DLs LOD Y este e 
75 miles west of Albuquerque Nov. 15,1853 | Lt. Whipple.. : 
DO eeeeeUOnslsiscicictee'vre'e'sioscle| NOVer 105 100d! susie se AO vejecccsees'l’s 
Cascade mountains, 0.T'.... ......+eeeeee-| Lt. Williamson... . 
Bataleon Osatetets clcietsleles's'aisielecies|'s0 see s'oumsieses|| siecese COs see 
Yakima river, W.T. .....| Aug. 5,1853| Gov. Stevens... 
Reise ste Osteen eneees wesnare/(MOpt, 161853)| cssess MO semareis s/s 
nee eee e ee wee e eee ee ne wee eens 
