CUCKOW. 



67 



acquires their notes ; whereas, all those birds who 

 possess the faculty of mimickry, or of learning 

 tunes, if hatched under another species of bird, 

 invariably gain their peculiar song, although it is 

 generally combined with their natural notes, af- 

 fording an admirable example in proof of the ex- 

 istence of innate propensities. 



