1892.] NATURAL SCIENCES OF PHILADELPHIA. 115 



informant added that it was the only one he had seen since leaving 

 California, where, as a cowboy, he had spent several years. 



This statement of an excellent hunter and reliable observer 

 should entitle this species to a place in the avifauna of Arizona. 



*14. Cathartes aura (Linn.). Turkey Vulture. 



Fairly common up to 4000 ft. 



15. Accipiter cooperi (Bonap.). Cooper's Hawk. 



Several couples found breeding and young secured. 



16. Buteo borealis calurus (Cass.). Western Red-tail. 



Common. A pair found as high as 8000 ft. 



17. Buteo abbreviatus Caban. Zone-tailed Hawk. 



Some half-dozen noted, one at 9000 ft. elevation. 

 A nest with two young Avas found in a caiion near Oracle in a 

 juniper. 



*18. Buteo swainsoni Bonap. Swainson's Hawk. 



I came suddenly upon a pair of these Hawks sitting on the bank, 

 at a bend in the Santa Clara, but they escaped before I could 

 secure them. 



•■■19. Aquila cbrysaetos (Linn.). Golden Eagle. 



A pair were observed sitting on the crags which overlook the 

 Caiion DeOro, above the trail to Mt. Lemon. 



20- Falco Sparverius Linn. Sparrow Hawk. 



Abundant everywhere. 



•■■21. Polyborus cheriway (Jacq.). Audubon's Caracara. 



Two were seen near Tucson and the species Avas occasionally noted 

 near Oracle. 



■••■22. Syrnium occidentale Xantus. Spotted Owl. 



On the opposite side of the Santa Clara valley at a point where 

 there rises a rocky hill whose precipitous sides front the city of 

 Tuscon, I found several of these owls. One pair was noticed perch- 

 ing on some large boulders and though they were in the full glare of the 

 sun they did not appear at all disconcerted. From the appearance 

 of the surroundings it seemed that these boulders were their regular 

 stands, and this was rendered more likely as a nest from which a 

 brood had evidently been raised was afterwards found in the 

 recesses of a narrow ledge below where they had been sitting, 



