16 PACIFIC COAST AVIFAUNA No. 15 



the rounded fan tail so that its white thumb-mark band shoM-ed strikingly- 

 all this as he gave his loud emotional call — Kroo-krou'-kron-Lru' . A rather 

 distant answering call suggested that lie was displaying for a prospective 

 mate. Display actually before a female was witnessed a week later by Mrs. 

 Nicholson when 1 was down in the valley. When the call was given without 

 the emotional display it lapsed almost to inojiotony, being heard at camp all 

 through the day. Some of the notes were heavily mouthed, while others were 

 muffled. The noise of the flight was volitional. One that I saw, puffed out 

 his chest and started with whacking wings, soaring around, wings and tail 

 spread; but shortly afterward it or another bird was seen flying by silently. 



Scardafella inca. Inca Dove 



One came to our camp bird table for Avater, April 25, 1921, but llicii dis- 

 appeared. Nests were i-eporlcd lo us in Tucson, May 7, on our return U-om 

 the mountains. 



Cathartes aura septentrionalis. Turkey Vulture 



Frequently seen by Swarth in June, 1903, flying overhead, and occasion- 

 ally seen by Howell July 28-August 15, 1918, in Madera Canyon, "very far 

 oveT'head.'" While nineteen were counted by us November 20, 1920, between 

 Tucson and Continental, and one was seen on the Range Reserve on January 

 1, and again on March 24, 1921, they were not seen at the higher level (-1,000 

 feet) of the Nicholson Ranch until April and May, when they were occasion- 

 ally noted. Five were seen on April 16, flying over the narrow gorge of Stone 

 Cabin Canyon, and six were seen May 2, flying together, one in the lead. 



Accipiter velox. Sharp-shinned Hawk. 



One or two were seen in June, 1903, by Swarth, and one or more were 

 seen occasionally by us during the winter of 1921. On January 23, one was 

 seen in Stone Cabin Canyon above 4,500 feet, where it had been bathing in 

 a small pool. During the winter now and then one would dart through camp, 

 routing a flock of Gambel Sparrows from the bird table, and once the tell- 

 tale feathers of a Quail were found under the mesquites only a few rods away. 

 On March 23, on the Santa Rita Range Reserve, when a mixed flock of Ves- 

 per Sparrows, Lark Buntings, and Brewer Sparrows flew into a dense hack- 

 berry bush, a Sharp-shin darted after them, circling around the bush as if 

 baffled. 



Accipiter cooperii. Cooper Hawk" 



One was seen and a nest with eggs slightly incubated was found ])y Ste- 

 phens, May 18, 1881, in Madera Canyon: and a nest containing young was 



"The Arizona form has been referred to imder the name Accipiter cooperi mex- 

 icamis, Western Cooper Hawk. 



