A New Idea in Bird Study 



This illustration reproduces in actual size a part of the new 



Audubon Pocket Bird Collection, Case No. 1 



This is a folded card containing, on a surface 9^ x 7^ inches, Pictures 

 in Full Natural Colors of Sixty-three Winter Birds of the Eastern States. 

 It is to be carried afield in the pocket as a practical means of naming Birds 

 seen in the course of a walk. 



Case No. 2 is a similar card with Colored Portraits of Eighty-two 

 Birds common in the Southeastern States. 



Case No. 3 — Contains seventy-four figures ot March and April 

 migrants of Eastern United States. 



Case No. 4 — Contains eighty-four figures of the common winter birds 

 of the Western United States. 



PRICE FOR EACH CASE, 10 CENTS 

 For Sale by 



The National Association of Audubon Societies 



1974 BROADWAY, NEW YORK CITY 



