OBSERVATIONS ON DOVES LEARNING TO DRINK 279 



(8) Is there any difference between fowls and pigeons in the 

 respective parts played by instinct and by experience in drink- 

 ing? We have not sufficient data, especially on pigeons, to 

 answer this question. It would be well to investigate also the 

 drinking of those birds of arid regions of which it is said that 

 they never drink from pools of water but only from hanging 

 drops. Wilson 4 says this of our prairie-hen. Such birds appear 

 to be the extreme opposite of pigeons. 



4 Wilson. Alexander and Bonaparte, C. L. American Ornithology. Article on 

 " Pinnated Grouse." In the edition published in Edinburgh in 1831, this state- 

 ment is in Vol. II, p. 330-331. 



