DEVELOPMENT OF SPUES. 
163 
<W, 
XV. 
by , a different sort of nest, not liable to be injured 
So y Cl1 s l )Urs ) from that made by their nearest allies, 
t b f .i,.' at t ^ lere bus been no neerl for the removal of 
s purs? Or are we to suppose that these fe- 
es pecially require spurs for their defence ? Jt 
a eir 
>l 6s 
b a 'Specially require spurs for their defence ? j 
frid i° le P r °bable conclusion that both the presence 
M aij- 1 
®Dtly a ' vs °i inheritance having prevailed, independ- 
''’bi°/ na fr ir{ fr selection. With the many females 
* ( 1 spurs appear as rudiments, we may conclude 
' V ^ch' S ° me ^ ew ^ ie successive variations, through 
v, Uy tlie y were developed iu the males, occurred 
S^ly iu life, and were as a consequence trans- 
!° fr*° females. In the other and much rarer 
' -n which the females possess fully developed 
’ " e uiay conclude that all the successive yaria- 
'Vall v "" ere fr’uusferred to them; and that they gra- 
ac quired the inherited habit of not disturbing 
h 
bests' 
V , ir ^° c al organs and tbe variously-modified feathers 
lf) t Us ^ Ucing sound, as well as the proper instincts 
\ e h ° ^ em > often differ in the two sexes, but are 
the same in both. Can such differences be 
H|| d ^ . tor by the males having acquired these organs 
'hbjgj.- . m cts, whilst the females have been saved from 
V; n S them, on account of the danger to which 
vyr - ~ vr,A U/V.WUJ-1P vi uaugci l\J VVIUCJL 
have been exposed by attracting the at- 
°t birds or beasts of prey ? This does not 
'Hi r ^ llle probable, when we think of the multitude 
‘*ir v ,' v hich with impunity gladden the country with 
lCes during the spring. 6 It is a safer conclu- 
VV ea m . 
1 p. aiT ington, however, thought it probable (‘ Phil. Transact.’ 
) that few female birds sing, because the talent would have 
M 2 
