1923 BIRDS OF THE SANTA RITA MOUNTAINS 47 



January 16, probably ten oi* more were noted in tlie oaks of Barrel Canyon, 

 where mistletoe was abundant. 



Lanius ludovicianus excubitorides. Wliite-rumped Shrike 



Found by Swarth in June, 1903, out on tJie mesa below Madera Canyon, 

 On June 21, he found a nest with five eggs in a mesquite. The Shrike was 

 frequently seen by Bailey, October 25-29, 1913. A few were seen by us in 

 1921, from a little above our camp at 4,000 feet down to Continental at 2,900 

 feet, and others were seen on the telephone wires between Continental and 

 Tucson. On a very cold morning, January 23, 1921, when presumably no 

 grasshoppers had been out for weeks, a Shrike was seen flying into a low mcs- 

 (luite and picking at what i)r()ved to be an old dried, wingless grasshopper, 

 im[)aled through the thorax. A few hours later the grasshopper was gone, so 

 in this instance the storing instinct served its purpose. On March 1, several 

 of tlie l)irds were seen on the ('ontinental-Tucson telephone wires. On March 

 22, two were seen on the U. S. Range Reserve. On January 16, 1923, two were 

 seen and one taken by Taylor at Rosemont (5,000 feet). 



Vireosylva gilva swainsoni. Western Warbling Vireo 



Taken by Henshaw, August 28, 31, and September 1, 1874, near Camp 

 Crittenden. An adult female was taken by Stephens on June 23, 1903, in Ma- 

 dera Canyon, but as it did not appear to be a breeding l)ird, it was probably a 

 straggler. After the breeding season, from July 28-August 15, 1918, Howell 

 found it "fairly common in Upper Sonoran and low Transition, usually in com- 

 pany with Baeolophus.'" Two adults were taken August 1 and 2, 1918. In the 

 spring migration of 1921, I saw one on March 25 and another on April 8, among 

 the live oaks at about 4,000 feet. 



Lanivireo solitarius cassini. Cassin Vireo 



Taken by Henshaw the last few days of August, 1874, at Camp Crittenden, 

 quite a number being seen among the deciduous trees. Taken by Stephens, 

 May 11, 1881, in Madera Canyon. A gray-headed vireo with olive back was 

 seen by me on April 5 and 8, and May 3, 1921, in the live oaks of the Nichol- 

 son Ranch. 



Lanivireo solitarius plumbeus, Plum])eous Vireo 



Three specimens were secured by Nelson, June 11, 15, and 18, 1884, at 

 Gardner's Ranch. It was seen hy Swarth the latter half of Jmie, 1903, ''on 

 various occasions in the higher parts of the mountains," and was found by 

 Howell, July 28-August 15, 1918, slightly commoner than siuainsoni, in Transi- 

 tion, "usually in company with tits and Avar})lers. " Four adults Avere taken 

 August 1, 4, and 12, and an immature, August 12, 1918. One, presumably of 

 this species, was seen by me on March 31 and April 1, 1921, in the live oaks of 

 the ranchhouse. 



