APPENDIX 



c'. Bill slender; head and throat ashy or slaty gray; no 

 marking except white on eyelids, and black between bill 

 and eye; back olive-green. 



Macgillivray's Warbler 1 72 



g. Entire head yellow. Back gray; breast whitish. 



a. Back spotted and streaked with black; a large black 

 throat-patch and gray breast. White wing bars. 



Hermit-Warbler 171 



b'. No black ; patch of chestnut on wing covert. 



Verdin; Gold-Tit 200 



h. Rump yellow. 



a. Bill slender; size small. 

 a". Throat white. 



Yellow-rumped Warbler 167 



b". Throat with at least a trace of yellow; in full plum- 

 age bright yellow. 



Audubon's Warbler 1 68 



b'. Bill immensely thickened; size larger than a sparrow. 



Evening Grosbeak 1 06 



I. No yellow except golden crown bordered with black. 

 a. Back olive-green; size very small. 



Golden-crowned Kinglet 201 



b'. Back streaked brownish and blackish brown. Back of 

 crown ashy or whitish. 



Golden-crowned Sparrow 126 



III. Birds without any conspicuous color, but with a trace of yellow, 

 markings of rufous, olive-green or iridescent green. 

 I . Birds with some trace of yellow, either in special areas or in 

 general tone. 



a. Yellow on some part of the head. 

 a. Dull yellow on crown. 



a". Back streaked dark brown and buff. 



Golden-crowned Sparrow 1 26 



b". Back plain olive-green. 



Lutescent Warbler 1 65 



c". Back and breast plain gray; rump sometimes yellow. 

 Bill stout; size larger than a sparrow. 



Female Pine-Grosbeak 107 



d". Back and breast olive-gray; rump yellowish; bill 

 crossed. 



Female or young Crossbill Ill 



[145] 



