c„. 
AP. XVI. THE YOUJTS LIKE THE ADULT FEMALES. 195 
^ers slightly from the female in his more strongly- 
^ "flounced red and brown tints, 10 we may conclude 
. his plumage has been, at least to a certain extent, 
Uenced by sexual selection. If so, we may further 
), er that the nearly similar plumage of the female 
nek-grouse was 
f eri od. But 
has s 
similarly produced at some former 
since this period the male black-grouse 
acquired his tine black plumage, with his forked and 
hardly-curled tail-feathers ; hut of these characters 
<il ' e has hardly been any transference to tho female, 
f j®pting that she shews in her tail a trace of the curved 
.. ^ e may therefore conclude that the females of dis- 
°t though allied species have often had their plumage 
Offered more or less different bv the transference in 
j ll ->us degrees, of characters acquired, both during 
s ^ llle r and recent times, by the males through sexual 
i .®eti°n. But it deserves especial attention that 
hant colours liave been transferred much more 
u y than other tints. For instance, the male of 
e r ed-throated bfuebreast ( Cyanecula suecica) has 
a sub-triangular red 
tin 
j, ri °h blue breast, ineludin 
now marks of approximately the same shape 
Sn, Ve keen transferred to the female, hut the central 
Pace 
is fulvous instead of red, and is surrounded by 
' ^ied instead of blue feathers. The Galliuaeeae offer 
au y analogous cases ; for none of the species, such as 
Pfyw . • .. ^ ^ l ‘r 
n nges, quails, guinea-fowls, &c., in which the colours 
! plumage have been largely transferred from the 
to the female, are brilliantly coloured. This is 
*the 
"'ale 
I s e xemplified with the pheasants, in which the male 
^rally so much more brilliant than the female ; 
"’ith the Eared and Cheer pheasants (Grossoftilon 
10 
Macgillivrav, ‘Hist. Brilish Birds,’ vol. i. p. 172-171. 
o 2 
