BIRDS OF THE PACIFIC DISTRICT. 197 



ance or scarcity of mistletoe berries during the winter 

 months more than on the temperature. 



Poway. F. E. Blaisdell. — Common summer resident; 

 first male seen May 6, 1884, the first female May 11. 

 The latter and her mate had commenced a nest in a 

 small oak tree May 11. It does not remain long after 

 breeding; last seen August 2. 



San Bernardino. F. Stephens. — Tolerably common 

 summer resident of the valley and foothills. 



Colorado Desert. F. Stephens.— March 19-26, 1886. 



Marysville. W. F. Peacock. — March 8, 1884, one 

 specimen. It does not breed here. 



Chico. William Proud. — Two specimens; [informa- 

 tion verbal; date forgotten]. 



Fort Crook. Baird, Brewer and Ridgway. — April, 

 1860, found by Feilner but has not been met with near 

 the coast so far north. 



Hoffman. It was observed in the valley at the north- 

 ern slope of Mt. Magruder, on the eastern timbered foot- 

 hills of the Myo Range, west of Columbus, and again at 

 Spring Mountain, near the old " Spanish Trail," though 

 only at rare intervals. 



Cooper, 1870. On the Colorado I found them numer- 

 ous especially in winter, and they do not migrate much 

 south of latitude 35°. I also found them rather common 

 along the Mojave River in December. 



217. Lanius borealis Vieill. Northern Shrike. 



British Columbia. John Fannin. — Resident, not com- 

 mon. 



Dr. Cooper, 1860. The northern shrike is only a win- 

 ter resident in Washington Territory, appearing along 

 the coast in November and remaining until March. 



Willamette Valley. 0. B. Johnson.— Quite common 

 resident. 



