EVOLUTION OF BIRD-SONG 



CHAPTER IX 



THE INFLUENCE OF IMITATION IN RELATION TO BIRD-SONG 



Imitation by dogs and other animals— The notes of some birds 

 whoUv oerpetuated by imitation ; of others wholly by inherit- 



PAGES 



CONCLUSION 239-240 



APPENDIX 



Transcripts of music sung by blackbirds, thrushes, and skylarks 241-246 



BIBLIOGRAPHY OF TPIE SUBJECT . . . 247, 248 



INDEX 249-253 



