42 
SEXUAL SELECTION : BIEDS. 
Part It 
provokes a general battle . 7 Of the pugnacity of web- 
footed birds, two instances will suffice : in Guiana “ bloody 
“fights occur during the breeding-season between the 
7 Macgillivray, 1 Hist. Brit. Birds,’ vo). iv. 1852, p. 177-181. 
