Index. 145 



Night Hawk, Bull-bat (Chordcilcs virt;inianns, Ciiicl.). the feeding of, 15, 16; the rcaringof, So-85; e.ggs 

 and incubation of, ,So; behavior of, during incubation. So; hatching of, .So; the young of, 

 80-85; expression of fear in old and young of. So, Si; coralling the young of. Si; eyes and 

 eyelids in young of, 80; brooding habits of, 80, 82, 85; call and alarm notes of. Si, 82 ; feeding 

 habits in young of. Si, 82; illumination of throat of, Ijy phosphorescent insects, 82; encounter 

 of young of, with snake, 81 ; fledgling of, 85. 



Northfield (N. H.), Ijreeding of Cedar-birds at, 52; spring Bluebirds at, 71; nesting of Kingiisher at, 86. 

 (Sec Preface.) 



Nuthatches, tameness and habits of, 127, 128. 



o. 



Objections to method considered, 13-15. 



Observations from tent, the best time for, 7, 8. 



Oriole, Baltimore (Iclcriis t^alhiila, Linn.), nest of, iS; call-notes of young of, iS; removal of nesting 



bough of, i(;; beha\'ior of, 19; food brought to young by, ig; rate of feeding at nest of, 19; 



exercise of the fledglings of, 20; flight of )'oung of, from the nest, 20; use of tent at nest of, ig; 



cleaning instinct in, 104; lack of discrimination in young of, 121; summoned by alarm of Robin, 



122. 

 Ospre}', the American, or Fish Ilawk (PanJion haliaetns carolmcnsis, GnicL], nests and nesting habits 



of, at Plum Island (N. Y.), 115, 134, 135; at Bristol (R. I,), 115, 116; nest of, on cart-wheel 



on top of pole, 116; actions of, upon loss of mate, 116; tameness of, 134, 135. 

 Owls, filthiness of nests of, loS; change of feeding habits in, 116. 



Parasites on nest and young of Cedar-bird, 107. 



Partridges, eggs and young of, 117. 



Patience required in the naturalist's work, 13, 14. 



Patten, William, 114. 



Peep-holes in observation tent, the form and .size of, 31. 



Phcebe, taming of, 133, 134. 



Phosphorescence, display of, in Night Hawk, 82. 



Photography of birds, method of, xvii; the future of. xviii; a new method of, based on animal instinct, 

 xviii; new method described, 1-16: its conditions, i; its principles analyzed. 3; mode of 

 procedure in, 7; precautions in use of, 8; extent of application of. 11-13: objections to, con- 

 sidered, 13-15; advanta.ges of, 15-16; illustrations of. 17-28; the tools of, 29-35; of birds 

 after they have been tamed, in Robin, 131, in Chestnut-sided Warbler, 13:;. 



Pigeon, English Wood, habit of, 137 ; domestic, tameability of, 125; wild passenger, condition of nest- 

 ing site in, 107. 



Plates, photographic, exposure of, 34; deterioration of, 34; carriage and care of, 34. 



Plover, eggs and young of, 117. 



Plum Island (N. Y.), breeding and habits of Osprey at, 115, 134, 135. 



Polygamy in Bluebirds, 72. 



Popular natural history, defects of, xv, xvi; illustrations of, xviii, xix. 



Praecoces, 117. 



Precautions to- be observed in change of nestin.g site, S. 



Precision in instinctive acts of young birds, 67. 



Preening instinct in young Vireos, 65. 



Principles of new method of bird-studv, 3. 



Pugnacity, the instinct of, 4; in Kingbirds, 22; in Robins. 40. 134; in Red-eyed Vireos, 67; in young 

 of Kingfisher, 89; in domestic fowl, 134; in Tropic Bird, 1^4. 



R. 



Reaction of young bird to stimulus of food, 55. 



Redstart, flight of young of, from nest, 118; attracted bv Robin's alarm, 125. 



