Book-ends (answers)

Here is how the two sides of the bird pictures match to each other:

A - 6: Female Mallard





B - 3: White-Breated Nuthatch



C - 4: American Redstart



D - 2: American Robin



E - 7: Song Sparrow



F - 1: Cedar Waxwing



 G - 5: Ruby-crowned Kinglet