42 



SEXUAL SELECTION : BIEDS. 



Part IL 



provokes a general battle J Of the pugnacity of web- 

 footed birds, two instances will suffice : in Guiana " bloody 

 " fio-hts occur durins: the breeding-season between the 



7 Macgillivray, ' Hist. Brit. Birds,' vol. iv. 1852, p. 177-1 8L 



