FO OF eR O&O 
13. Nesting site, nest, and young of Marsh Hawk , 
. Young Marsh Hawks and nest . 
LIST OF ILLUSTRATIONS 
. Gannet, Murres, Puffins, and Razorbilled Auks 
Frontispiece 
Tailpiece. Young Baltimore Oriole 
Initial. Long-focus camera and telephoto lens. 
. Lens test No. 1 
. Enlargement of the bird in test Se 1 
. Lens test No. 2 A 
. Enlargement of bird in tet No. 2 
. Lens test No. 3 
. Enlargement of bird in test No. 3 
Initial. Young Great-crested Flycatcher . 
. Spring . 
. Summer 
. Autumn : 0 c : 
. Winter—four piehares (Nos. 8- 11) from hs same point 
of view 
. Nest locality of five species 
. Young Great-crested Flycatcher 
. Young Baltimore Orioles and nest 
. Wood Thrush on nest ; 
. Chestnut-sided Warbler on nest 
. Catbird scolding . 
Initial, “ Fairview ” 
. House Sparrows and Junco 
. Junco 
. Female House Santon and nest 
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