Plate XII 



1. Bay-breasted Warbler, Male. 4. Chestnut-sided Warbler, Male. 



2. Bay-breasted Warbler, Female. 5. Chestnut-sided Warbler, Female. 



3. Bay-ereasted Warbler, Young. 6. Chestnut-sided Warbler, Young. 



(one-half natural size.) 



