420 



ZOOLOGY BIRDS. 



of that Territory and Mexico proper. Captain Bendire found tins haAvk 

 not uncommon near Camp Lowell, where it was breeding ; and it was only 

 at this point that our party detected its presence. It probably, however, 

 is not confined to this one spot, but wanders over the southern part of the 

 Territory ; and, in common with quite a number of birds more peculiarly 

 Mexican in their distribution, may get as far north as the Gila River. Of 

 its habits I know nothing ; the pair I procured being shot just at dusk when 

 they had retired to roost in the top of a dead cottonwood. 



U11UBJT1NGA ANTHKACINA, Nitzsch. 

 Anthracite Hawk. 



Unibitinga anthracina, IlENSHAW, Am. Sportsman, v, Feb. 20, 1875, 328 (introduced- 

 into Diiitcd States fauna). 



SP. CHAR. Wiug, 13.15-15.80; tail, 7.00-11.00; culmen, 1.00-1.10; tarsus, 3.00- 

 Jj.50; middle toe, l.GO-l.SO. Third ami fifth quills longest; the first intermediate 

 between the eighth and tenth ; outer four with the inner webs slightly sinuated. Tail 

 very slightly rounded, the outer pair of feathers just appreciably the shortest. Upper 

 tail-coverts black, barred with white. 



Aditlt. General color uniform carbonaceous black, with a strong glaucous cast on 

 the back, neck, and breast. Upper tail-coverts narrowly tipped with white. Tail deep 

 black, narrowly tipped with white; extreme base also white, and crossed at about the 

 middle by a broad continuous zone of the same of variable width. Inner webs, and 

 the concealed portion of the outer webs, of the secondaries mottled with rusty ochra- 

 ceous. Terminal half of the bill plumbeous black ; the basal half, the cere, and the ric- 

 tus yellow; tarsi and toes yellow; claws plumbeous black. 



Young. Above brownish-black, more or less variegated with ochraceous, and some- 

 times with rusty, on wing coverts and scapulars. Wings indistinctly banded with 

 dark grayish-brown. Head, neck, and lower parts ochraceous- white, with longitudinal 

 stripes of black ; tibia? transversely barred with the same. Tail crossed with about 

 seven bands of black and white; the bauds of each individual feather oblique; the rela- 

 tive width of the two colors varying with the individual ; but the subteruiinal black 

 bands always about twice as broad as the others. Inner ends of secondaries strongly 

 tinged with rufous. Upper tail-coverts white, more or less barred with black. On the 

 head and neck, the streaking is not uuiloim, but the areas where the light or dark 

 markings predominate, respectively, are as follows : The gular region, cheeks, and 

 supraoral region are whitish, with tine streaks ; but the pileum and nape, upper hall' 



