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The difficulties attending the study of Marsh Birds will be greatly « 



simplified by reading WILLIAM BREWSTER'S fully illustrated art- 

 icle on 



I "The Bird Voices of a 



♦ TVT . r 1 1 1 C ft 



New England Swamp, 



in BIRD-LORE for April. 



The Macmillan Company, Mulberry and Crescent streets, Harris- 



♦ burg, Pa. 



Annual Subscription $1 ; Single Copy 20c 



Subscribers to Vol. IV, 1902, beginning with No. 1, will receive free 

 a copy of the December, 1901, number, containing the first article in 

 the year's series on "How to Name the Birds," by Frank M. Chapman; 

 and Ernest Thompson Seton's paper on "The Recognition Marks of 

 Birds," with illustrations of 18 species of Hawks and Owls. 



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