INDEX 



Alarm-notes, 22 



discrimination in, 27-30 



elaboration of, 23 



inducing silence, 31 



inheritance of, 30 



of blackbird, 24 



of young birds, 25 



origin of, 22 



relation to enemies, 26 



repetition of, 23 



variation of, 26, 236 

 American bluebird, 102 

 American robin, 97, loi, 104 

 Angola finch, 132 

 Archetypal cries, 137 

 Argentine blackbird, iii 

 Australian robins, iii 



Bechstein on mimicry, 192, 218 



Bird-songs, defined, 10 



Blackbird, 56, 65, 67, 73, 80, 95, 



97, 166, 224 

 Blackbirds and dog, 29 

 Blackcap, 67, 68, 73, 150 

 Black-headed bunting (Am.), 122 

 Black redstart, 105 

 Blue jay (Am.), 94 

 Blue titmouse, 53, 55 

 Brambling, 126 



Broad-billed flycatcher (S. Af.), 191 

 Brown wren, 51, 55, 73 

 Bullfinch, 34, 50, 56, 61, 172 

 Buntings and finches, 122 



Call-note, 40 

 abandoned, 47 

 in song, 53 

 repeated for song, 50 



Call-note, repetition of, 49 

 Call-notes of allies alike, 68 

 Canary, 34, 40, 163, 172 

 Catbird (Am.), 165 

 Chaffinch, 42, 43, 55, 67, 147, 



150, 225 

 Chaffinchs' battle-cry, 43 



call, 42 

 Chat thrush (S. Af.), 104 

 Chickadee (Am.), 135 

 Chicks, 86 

 Chiffchaff, 61 



Cirl-bunting, 56, 68, 120, 187 

 Coal tit, 55 



Cock of the rock (S. Am.), 67 

 Cock's crow, 26, 37, 51, 56, 64 

 Colymbidae, 46 

 Combat, influence of, 33 

 song in, 37 

 wren's song in, 39 



Common bunting, 55 



Conclusion, 239 



Confinement, effect of, 75 



Creeper, 50 



Crestedscreamer(S. Am.), 69, 81, 85 



Cries, characters of, 47 

 persistence of, 46 



Crow of British Columbia, 93 



Crows, 95, 163, 164, 175 



Cuckoo, 89, 134, 143. 154. 155 



Cushat, 51 



Dancing, 66 

 Dartford warbler, 113 

 Dendrocolaptidas, 60 

 Dog, use of, 99 

 Doves, 134 

 Ducks, 86, 89, 182 



