262 APPENDIX 



BLACK SWIFT 



(422. Cypseloides niger borealis) 7| in. 



Sooty black; paler below; forehead gray. 



S. V. Rare. Very local in southern California. Recorded dur- 

 ing summer, but not known to breed. No published records for 

 Arizona, though it should occur in higher mountains. 



Range: Western North America. Breeds from southern British 

 Columbia and southern Colorado south to central Mexico; winters in 

 southern Mexico. 



WHITE-EARED HUMMINGBIRD 



(440.1. Basilinna leucotis) 3f in. 



Male: Green above; forehead and chin deep blue, throat and chest 

 metallic emerald-green; a clean white stripe behind eye, below this 

 a smaller black one extending across ear-coverts. 



Southeastern Arizona S.V. High mountains. Rare. 



OLIVACEOUS FLYCATCHER 



(455a. Myiarchus lawrencei olivascens) 7| in. 



Similar to Arizona Crested Flycatcher, but much smaller; back 

 grayish olive-green. 



S. V. Mountain ranges of extreme southeastern Arizona, where 

 it occurs chiefly in brushy canyons, in Upper Sonoran Zone. 



GRAY FLYCATCHER 



(469.1. Empidonax griseus) 6 in. 



Like the Wright, but larger and grayer, though many individuals 

 are hardly separable even in the hand. 



W. V. Rare. Occurs in warm localities in southern California, 

 and in southwestern Arizona. Supposed to nest in desert ranges, but 

 all records questioned. 



BUFF-BREASTED FLYCATCHER 



(470a. Empidonax fulvifrons pygmaeus) 5 in. 



Dull gray-brown above; pale buffy below, sides darker. 



A small, inconspicuous and rather secretive bird, rare and locally 

 distributed, in mountains of southeastern Arizona. 



BRONZED COWBIRD 



(496a. Tangavius aeneus aeneus) 8 in. 



Male: Black, with bronzy sheen; wings and tail with bluish and 

 purplish reflections. 



Arizona S.V. Rare. Extreme southeastern corner of the 

 State, in Lower Sonoran Zone. 



