146 Index. 



Redwing (sec Blackbird). 



Regurgitation, of indigested food in Kingbirds, 28; of food for young in Cedar-birds, 55, 61; in Vireo, 66. 



Reproduction, cycle of, 3, 4. 



Respiration in Redwing Blackbird, 21. 



Response, of throat and gullet of young, 55, 101, 102 ; in young of Baltimore Oriole to one of their num- 

 ber, 12 1 ; of young Red-eyed Vireos to notes of other birds, 68; of young of Bluebirds, 74; of 

 young of Catbirds, 77, 78. 



Rhinoceros-bird (Bnpliaga erytkmpyncha) , change in food habits of, 116. 



Robin (.1/Vn/Ai inigratoria. Linn.), the instincts of, displayed in migration and nest building, xvi; no 

 learning of instinctive responses required or possible, xvi; time spent by young of, in non- 

 nesting site, 13; as symbol of cheerfulness, 36; history of, 3651; spring arrival of, 48, 49; 

 incubation in, 36; choice of nesting site in, 49; behavior of, when nesting bough is moved, 39, 

 40, 45; call-notes of, 39, 45; feeding young in, 39. 46-48; economy in food in, 39; neatness 

 of, 39; spontaneous behavior in, 39; parental instincts of, 39, 40, 45; panoramic scenes at 

 nest of, 46, 47; flight from nest of, 40, 47, 48; keenness of vision of, 39; habits and instincts 

 of fledglings of, 40, 47, 48; peculiar notes of, for arousing the young at nest, 45; in winter, 48; 

 fruits eaten by, in summer and winter, 48; nests of, under cover, 49, 50; nest of second brood of, 

 50; in city life, 50, 51; gregarious habits of, in summer and winter, 51; Bluebird in nest of, 

 75; eating excreta of young by, 39, 105, 106, 109; characteristic attitudes of, 105; actions of, in 

 cleaning the nest, 105, 106; formation of habits in, 111; food brought to nest of, 116; eggs 

 and young of, 117; effect of alarm of female of, upon cock at nest, 122; as an exponent of 

 taming process, 130-131; display of pugnacity in, 40, 134. 



Roosts of Robin in summer and winter, 51. 



S. 



Sac of excreta in young, 104; disposition of, by parents, 104-110; character of, in Robin and inspec- 

 tion of, after removal from nest, 105, 106; bursting of, in mouth of Robin, 109; seizing and 

 devouring of, by Chestnut-sided Warbler, 109. 



Sanbornton (N. H.), Robin's nest under cover at, 49. 



Sanitation of nest, 103110; in Woodpeckers, Chickadees, Thrushes, Waxwings, Vireos, Warblers, 

 Orioles, Blackbirds, Bluebirds, 104; in Crow Blackbird, 104, 105. (See also under names of 

 species.) 



Shutter, concealment of observer while setting, 31; iris diaphragm, 34; focal plane, 34; time marks of, 

 34; rapidity of, 34; a desideratum in, 5, 34. 



Sim, Robert J., 62, 114, 128. 



Snake, rescue of Vireo from, 69; encounter of Night Hawk with, Si; black, in act of swallowing young 

 bird, 123. 



Snipe, eggs and young of, 117. 



Snow eaten by Chickadees, 128. 



Sounds, effect of, upon birds, 5, 68, 112. 



Sparrow, Chipping, suppression of fear in, 5; House (Passer domestic-us. Linn.), pugnacity of, 72; com- 

 bat of, with cicada, 103; condition of nesting site in, 107; nesting of, in hood of electric 

 street-lamps, 114; nest of Eaves Swallow appropriated by, 114, 115; tameability of. 125,127; 

 Song (Mclospiza fasciata, GincL), nest of, 12; attracted by alarm of Robin, 123; habits of, 

 during incubation, 134. 



Spiders or their prey eaten by Cedar-birds, 63. 



Stork, habits of, 125. 



Swallow, Barn (Clididon crythrogasier , Bodd.), accident to young of, 49; condition of nesting site in, 107; 

 Eaves (Petrochelidon liuiifrons. Say), dispossessed of nest by House Sparrow, 114, 115. 



Swift, Chimney (Chcctura pelagica. Linn.), significance in change of nesting habits of, 113, 114: nesting 

 instinct of, 113; nesting of, in barn and shed, 114. 



T. 



Tail of Bluebird used for support. 73-74. 



Tamcness, of birds in nature, 125, 127, 128, 135-137: of the Pine Grosbeak, 135: of Bohemian Wax- 

 wing, 136; of Crossbills, 136; of birds of Galapagos Islands, 136. 



