RESULTS
Sexual Dimorphism
As expected, females were significantly larger than
males, although absolute dimorphism was relatively small
(Table 1): females were on average 108% of male size. This,
however, may be an underestimate of general population
dimorphism because although males varied substantially
in size (Table 1), we did not use very small males (see
Methods). For all other traits except mass (casque height,
head width, jaw length, tail length, relative size of the
flank patch), males were relatively larger (Table 1).