248 



Index 



Economy of food, in Robin, 74; 

 in Red-eyed Vireo, 109; in the 

 Kingbird 1 83 



Edwards, Professor C. L., 170 



Eggs, by Flicker, 13; largest num- 

 ber of, produced by domestic 

 fowls, 13 ; strength of attachment 

 to, 27; treatment of, when ad- 

 dled, by Tern, 33-34; of King- 

 bird, 49 ; incubation of, in Robin, 

 72; lateness of laying of, in Ce- 

 dar-bird, 90; laying and incuba- 

 tion of, in Cedar-bird, 93-94; 

 hatching of, in Night Hawk, 129; 

 treatment of, by Gulls, 165; 

 ' ' runt ' ' and abnormal variations 

 of, 167; color and size of, 168; 

 the turning of, by Gull, 169,-! 71; 

 time of laying of, in Chipping 

 Sparrow, 169; development of, 

 in fowl, 170; physiological zero- 

 point of, in fowl, 170; treatment 

 of, by domestic and wild birds, 

 171; treatment of cast-off shells 

 of, 172; behavior of birds when 

 incubating, 179; relation of size 

 of, to condition of young at birth, 

 214; of Canada Goose hatched 

 under hen, 234 



Egg-tooth, 172 



Egypt, ancient illustrations of 

 bird-life of, xxii, 177-178 



Embryo, growth of, in fowl, 170- 

 172 



Excreta, disposition of, by House 

 Wren, 43 ; actions of Cedar-birds 

 in taking, devouring, or remov- 

 ing, from nest, 98, 99, 191; dis- 

 posal of, by parents, 188-193; 

 character of, in young passerine 

 birds, 189; use of, as food by 

 adult birds, 189-190; nest-clean- 

 ing in Flicker, 191; use of, as food 

 in Chestnut-sided Warblers, 193 



Experiments in change of nest- 

 site tabulated, 21 



Eyes, opening of, in young Cedar- 

 birds, 94, 1 88; in young Red- 

 eyed Vireo, 103 



Fauna of Galapagos Islands, pe- 

 culiar character of, 242, 243 



Fear, the suppression of, 6, 14; de- 

 velopment of, in relation to ap- 

 pearance of feather-shafts of 

 wings, 1 6; in Cedar-bird, 37, 95, 

 102; suppression of, in House 

 Wren, 39-41; in Redwing Black- 

 bird, 47; in Kingbird, 49; in 

 Catbird, 76, 78; in Robin, 77; 

 appearance of, in young Cedar- 

 bird, 97, 98; in young of Red- 

 eyed Vireo, no; suppression of, 

 in adult Bluebird, 116, 117; de- 

 velopment of, in young Catbirds, 

 128; checked by brooding in- 

 stinct, 179; nature, time of ap- 

 pearance, sudden ^manifestation, 

 and adaptive value of, 214-217; 

 in Kingfisher, 217; instinct of, 

 in domestic chick, 218; in duck- 

 lings of Black Duck, 218; of 

 Hawk in sky, expressed by chick, 

 219; distinction between inher- 

 ited and acquired, 221; expres- 

 sion of, in Robin, 223; in the 

 Flicker, 224; checked by hunger, 

 240 



Feathers, development of, as guide 

 in controlling nesting site, 16; 

 development of, in Cuckoos, 16; 

 in Cedar-bird, 87, 99; develop- 

 ment of, in Red-eyed Vireos, 103, 

 no; in Catbirds, 125, 128; in 

 Kingfisher, 140, 141; in Night 

 Hawk, 129, 135; development 

 of, relation to fear, 217 



Feather-shafts, appendages of, in 

 Cedar- bird, 87 



Field-notes, method of recording, 

 70 



Fighting instinct. See Pugnacity 



Fireflies as food of young Night 

 Hawk, 134 



Fish, captured by Kingfisher, 138; 

 resources of Kingfisher to pre- 

 vent escape of, 145 



Flash Gun, 70 



Flicker (Colaptes auratus) , the egg- 

 laying capacity of, 13; sense of 

 fear blocked by brooding in- 

 stinct in, 27; strength of brood- 

 ing instinct in, 224; feeding 

 young of, 224-226 



Fly, robber (Asilus), fed to young 

 of Bluebird, 118, 120; escape of, 

 from grasp of Kingbird, 183-184 



