•7 Brewster 07i a Collection of Arizofia Birds. [January 



144. Accipiter cooperi Bonap. Cooper's Hawk. — This 

 Hawk was occasionally seen during Mr. Stephens's visit to the 

 Santa Rita Mountains. On May 18 a nest was found in the 

 fork of a green oak at a height of about thirty feet. It had 

 apparently been used several seasons. The eggs, which were 

 slightly incubated, measure respectively i.92Xi.-4i ; i-93Xi-42; 

 1.91X1-40; 1.93X1-40. The parent birds were exceedingly shy, 

 but one of them was finally killed vvith a rifle-ball. 



406, $ ad., Santa Rita Mountains, May iS. Length, 16.70; extent, 30; 

 wing, 9.38; tail, 8.44. "Iris brownish-red; cere, greenish-blue; legs, 

 greenish-yellow. Taken with set of four eggs." 



This specimen is absolutely indistinguishable from some of my Massa- 

 chusetts examples. 



145. Buteo abbreviatus Caban, Zone-tailed Hawk. — 

 This fine Buteo was met with only at Tucson, where three speci- 

 mens were taken. Of the first Mr. Stephens writes: "I was 

 standing on a dam that crossed the river at the head of an irri- 

 gating ditch, when below me a Vvdture, as at the time I supposed 

 it to be, attempted to catch some minnows in a shallow place, 

 fluttering over the water and trying to snatch up the little fish 

 with its feet. Failing in this it alighted on the dam near me when 

 I fired and killed it." This occurred in April. Later in the 

 season (June 7) a fine adult pair was obtained near the same 

 place but under somewhat difterent conditions. 'T was looking 

 for nests among the mesquites when the male of this pair came 

 circling over me. Upon shooting him the female appeared, and I 

 succeeded in getting her also. Feeling sure that they had a nest, 

 I began to search the surrounding trees and soon discovered it,* 

 well hidden by bunches of mistletoe." 



Dr. Coues took a Zone-tailed Ha^vk on the Gila River, Sept. 

 34, 1864, and this, so far as I know, is the only identified Arizona 

 specimen which has been previously announced. I cannot help 

 thinking, however, that the bird which Capt. Bendire found 

 breeding in Arizona in 1872 really belonged to this species, as he 

 at first supposed, and not to Urubitinga authracina^ as afterwards 

 surmised by Mr. Henshaw. Nor is it improbable that the black 

 Hawks seen by the latter gentleman near Camp Bowie were also 

 referable here. 



311. (J im., Tucson, April 30. Length, 1S.70; extent. 49.50; wing, 15,; 

 tail, 8.75; culmen (chord from cere), .88. "Iris brown; bill black, green- 



* The notes do not state what this nest contained. 



