GRINNELL'S CROSSBILL 525 



this Crossbill in Arizona is exceedingly erratic and irregular, and that 

 it is absent from any one locality for years at a stretch. Some day 

 its presence or absence in Arizona will be checked with its simultaneous 

 status in the mountains of California, and interesting correlations may 

 be discovered. Nevada: In recent years summer specimens have been 

 collected in the Charleston Mountains and the Shell Creek Range. 

 It is a reasonable expectation that some day grinnelli will be found 

 breeding in one or more of the higher ranges in western Nevada. 

 Lower California: A most irregular vagrant. Recorded from Guade- 

 lupe Island in Feb. and March, 1886; as 'common' on Sept. 20, 1896, 

 possibly having bred, to March 22, 1897; common in the San Pedro 

 Martir Mountains in June, 1925, no signs of breeding." 



This is another race taken from the range of bendirei as we formerly 

 understood it. It is, therefore, fair to assume that much that has been 

 published about Bendire's crossbill should be referred to the present 

 race, if the place where the observation was made seems to indicate 

 it. 



Distribution 



Range. — California, Nevada, Utah, and Arizona. 



Breeding range. — The GrinneU's crossbill is resident in interior 

 mountains of California (Mount Shasta, Sierra Nevada, San Jacinto 

 Mountains, San Bernardino Mountains), and in southwestern Nevada 

 (Grapevine Mountains), southwestern Utah, and northwestern and 

 central eastern Arizona (Mount Trumbull, Kaibab Plateau, Flagstaff, 

 White Mountains). 



Winter range. — Same as breeding range, wandering sporadically 

 north to central Nevada (Quinn Canyon Mountains), west to the 

 Pacific coast in California (Albion to Escondido) , and south to south- 

 eastern Arizona (Huachuca Mountains). 



Egg date. — California: 1 record, August 19. 



LOXIA CURVIROSTRA STRICKLANDI Ridgway 



Mexican Crossbill 



Habits 



Ludlow Griscom (1937) describes this race as: "The largest of New 

 World crossbills, with deepest and most powerful bill, the depth always 

 12 mm. or more; in general size averaging appreciably larger than 

 benti or grinnelli; coloration of adult male deep scarlet to blood red, 

 consequently averaging darker than grinnelli with a darker mantle; 

 female averaging darker than grinnelli, often but by no means always 

 with a darker, more olive yellow wash below." 



