Appendix, 



3. Conspicuous black marks on the sides of 

 face, passing through the eyes; color 

 bluish gray above, pale gray below. 

 Wings and tail conspicuously black and 

 white. 



Shrikes or Butcher Birds 



152-153 



4. Throat-patch black; top of head brown 

 or gray. 



a. Back brown, streaked with black; top 

 of head gray. 

 a'. An inhabitant of city streets. 



Male English Sparrow 115 



b'. Smaller, with longer tail. An in- 

 habitant of the sage-brush. 



Black-chinned Sparrow i 26 



5. Throat-patch white, in contrast to sur- 

 rounding regions. 



a. Back mottled brown and gray; under 

 parts barred white and brown. Bill 

 very small, buc opening of mouth very 

 wide. Length 8 to 10 inches. 



a'. Wing bars white; tail forked. 



Western Nighthawk . 60 



b'. No white wing bars; tail square, 

 broadly white-tipped. 



California Poorwill . 59 



b. Back brown, finely dotted with black 

 and white. Bill very long, slender and 

 curving. Length 5.5 inches. 



Canon Wren . . 179 



c. White throat bordered by broad black 

 streaks, and these bordered by white 

 streaks. Head gray; back light olive- 



