36 CALIFORNIA ACADEMY OF SCIENCES. 



30. Buteo abbreviatus Caban. Zone-tailed Hawk. 

 Cooper, 1870. I shot the specimen above described, 



the first found within the United States, on the 23d of 

 February, 1862, thirty miles north of San Diego, and 

 five from the coast. 



31. Buteo swainsoni Bonap. Swainson's Hawk. 

 Cooper, 1870. I found this species pretty common 



near San Diego, March, 1862. 



San Diego. L. B. — Rare in winter, breeding in El 

 Cajon, April 26. Shot in Lower California May 10, 

 1885, 40 miles southeast of San Diego; appears to be rare 

 south of San Diego. 



Poway. F. E. Blaisdell. — Only three observed, and 

 these before April 1, 1885. 



San Bernardino. F. Stephens.; — Breeds in the val- 

 leys; rare. 



Henshaw, 1876. Pretty well distributed over the 

 southern part of California, and is in certain localities 

 very common. This was the case in the San Fernando 

 Valley in July. 



Techachapi. L. B. — Common. Two shot in March, 

 1889. 



Heermann. I first remarked this species at Grayson- 

 ville Ferry on the San Joaquin River, and continued to 

 meet it occasionally until we had crossed Kern River. 



W. E. Bryant. Several specimens taken at Grayson 

 in spring of 1881. 



Stockton. L. B.— October 8, 1883, twelve seen on 

 the ground in a single field catching insects. I have 

 seen the species in Butte county in June and September; 

 I suppose they breed there. 



Fort Klamath. Lieut. Wittich. 



Jacksonville, Oregon. W. E. Bryant.— In breeding 

 season. 



