THE YOUNG LIKE ADULTS OF SAME SEX. 221 
C «. Xv 
XVi. 
' bro 'vn colour with a golclen-red head, is the male, 
^ s t the other, which is elegantly variegated with 
tl an d white with a metallic-green head, is the ie- 
Now the young from the first resemble to a 
), f a ’ n extent the adults of the corresponding sex, the 
glance gradually becoming more and more com- 
L 
Ihi COnsidcirin S this hist case, if as before we take the 
Ik " I:i?e °f the young as our guide, it would appear 
C both sexes have been independently rendered 
if ul ; and not that the one sex has partially trans- 
its beauty to the other. The male apparently 
tirj) at( l u i r( 'd his bright colours through sexual selec- 
111 the same manner as, for instance, the peacock or 
A 
fds ant in our first class of cases: and the female in 
Hi banie manner as the female Rhynchsea or Turnix 
the 
^ second class of cases. But there is much diffi- 
6 jj. - v in understanding how this could have been 
at the same time with the two sexes of the 
the 6 , s P ec i es - Mr. Salvin states, as we have seen in 
t ]| 6 ei ^ b th chapter, that with certain humming-birds 
^j t( tlla ies greatly exceed in number the females, whilst 
t °ther species inhabiting the same country the 
S S rea % exceed tlio males. If, then, we might 
'till ' 116 tbat dur i D o some former lengthened period the 
U 6 as °f the Juan Fernandez species had greatly ex- 
l 6t . ed the females in number, but that during another 
tl^oned period the females had greatly exceeded 
titles, we could understand how the males at one 
i, ’ au d the females at another time, might have been 
o 0 ] ere d beautiful by the selection of the brighter- 
ti)j 0lll ' ed individuals of either sex; both sexes transmit- 
their characters to their young at a rather earlier 
& than usual. Whether this is the true explanation i 
