28 CALIFORNIA ACADEMY OB' SCIKNCKS. 



Baird, Brewer and Ridgway. Dr. Gambel, who secured 

 his specimens at the mission of St. John, near Monterey, 

 describes it as flying low and circling over the plains in 

 the manner of a marsh hawk. 



Alameda County. W. E. Bryant. This hawk bred 

 here formerly; it is still a very rare resident. 



Sebastopol. F. H. Holmes. 



Berkeley. T. S. Palmer. Rare accidental visitant. 

 Found only about the marsh, three miles west of 

 here on the bay. December 26, 1885, again April 13, 

 1886. 



Cooper, 1870. I have seen them as far south as 

 Bolinas Bay and near Monterey, but always about streams 

 or marshes. 



Heermann. The extensive marshes of Suisun, Napa 

 and Sacramento Valleys are the favorite resorts of these 

 birds, more especially during the winter season, as they 

 then find a plentiful supply of insects and mice, their 

 principal nourishment. I fell in with an isolated pair 

 in the mountains between Elizabeth Lake and William- 

 son's Pass. 



L. B. This hawk is still a common resident about the 

 extensive tule marshes in the center of the State. I have 

 seen what I believed were their old nests in willow trees 

 along the San Joaquin River. I noticed one of these 

 birds at Gridley, October 20, 1884, and another at Red 

 Bluff, February 4, 1885. It is a common resident in 

 the tules of Sutter County. 



24. Circus hudsonius (Lhm.) MARSH HAWK. 



Northwest Lower California. Col. N. S. Goss. Near 

 the boundary line, March 23, 1884, nest and eggs. 



Tolerably common about San Diego. L. B. 



Santa Ana River. F. E. Blaisdell. December 9, 

 1884, to January 6, 1885, not common. 



