PLATE X 



1. MYRTLE WARBLER, ADULT MALE. 4. AUDUBON'S WARBLER, ADULT MALE. 



2. MYRTLE WARBLER, ADULT FEMALE. 5. AUDUBON'S WARBLER, ADULT FEMAL 



3. MYRTLE WARBLER, YOUNG. 6. AUDUBON'S WARBLER, YOUNG. 



(ONE-HALF NATURAL SIZE.) 



