Tern, arctic, 11, 38, 39 (map), 40, 41, 

 68 



common, 40 



Forster's, 40 



noddy, 30 



sooty, 30 

 Theories of migration, 7 

 Thrush, 4, 15, 19, 21, 27, 31, 38, 60, 

 77 



eray-cheeked, 21, 23 (map), 55 



hermit, 75 



wood, 55 

 Titlark, 73 

 Titmouse, 34 



tufted, 82 

 Transmutation, 5 

 Turd us migratorius, 35 

 Turnstone, 11 

 Turtle [dove], 2, 6 

 Vagrant migration, 73 

 Variable migrations within species, 



35 

 Vertical migration, 72 

 Vireo, 15, 55, 75, 77 



red-eyed, 69 (map), 70 

 Vulture, 26 



turkey, 34 

 Warbler, 15, 17, 18, 27, 60, 75, 76 



black and white, 12, 13 (map), 

 14 (map) 



blackpolled, 16, 18, 24, 25 (map), 

 55, 60, 70 



Warbler — Continued 



black-throated blue, 14 



Cape May, 37 



golden-winged, 63 



Kentucky, 63 



myrtle, 61, 70 



palm, 37 



pine, 37 



summer, 21 



wood, 31, 32 



worm-eating, 63 



yellow, 14, 21, 70 

 Waterfowl, 20, 47, 55, 58, 59, 61, 



64,93 

 Waxwing, 32, 33 



Bohemian, 12, 74 

 Weather, influence of, 80 

 Wheatear, Greenland, 11 

 Widgeon, 55 



American, 62 

 Woodcock, 37 

 Woodpecker, 34 

 Wren, 15 



Carolina, 34, 82, 83 



long-billed marsh, 33 



rock, 37 



winter, 34, 75 

 Wrentit, 82 

 Yeagley, Henry L., 30 

 Yellowlegs, lesser, 21 

 Yellowthroat, Maryland, 35, 78 



o 



102 



