PLATE I 



1. YHLLOW VVAKBLER. MALE. 



2. YELLOW WARBLER, FEMALE. 



3. MANGROVE WARBLER. MALE. 



4. MANCHOVE WARBLER, FEMAI 



5. PRAIRIE WARBLER, MALE. 



6. PRAIRIE WARBLER, FEMALE. 



(ONE-HALF NATURAL SIZE.) 



