124 
PEREGRINE FALCON, 
streak beneath the auriculars, greyish black, 
shading into a deep bluish grey on the back 
and shoulders, rump and tail coverts ; the centre 
of each feather on the back darker, but on the 
scapulars having the shaft only conspicuous, and a 
slight irregular clouding towards the tip of the 
feather ; on the rump and tail coverts the grey is 
paler, and the feathers are indistinctly formed 
with greyish black j the quills are greyish black, 
with pale edges, slightly tinged with grey on the 
outer webs, the three first are darkest ; on the 
lower side they are obscurely spotted on the 
inner web with reddish white ; the second is the 
longest in the wing, and the first only is notched, 
(see wood cut, p. 106 ;) they reach within half an 
inch of the tip of the tail ; the tail is nearly square, 
bluish white, with a tint of yellowish grey, pale 
at the end, and narrowly bound with greyish 
black ; the chin is white ; the throat and breast 
are cream-yellow ; the shafts of the feather on the 
latter dark, and shewing a very narrow streak ; 
from the breast downwards the lower parts are of 
a pearl-grey, tinted with rufous, the shafts of the 
feathers appearing very marked, and having 
those feathers on the lower part of the breast 
with a deep transverse spot, which gradually 
changes into bars, more indistinctly marked on 
the thighs and lower tail coverts ; bill is bluish 
black, yellowish white toward the base of the 
