5. Aquila. 25 



Adult male. Similar in plumage to the female, but seldom 

 quite so large; deeper in tint of colouring, the nape, hind neck 

 and median wing-coverts being bright rufous-chestnut. 



Young. General colour rusty-red intermixed with dark- 

 brown ; crown of the head dark-brown, each feather tipped with 

 rufous fawn-colour ; nape and hind neck rufous-chestnut, lower 

 part of hind neck paler, and shaded with dark-brown, in the 

 centre tipped with fulvous ; on the back and rump dark-brown, 

 lighter near the tips, which are fringed with whitish down ; the 

 base of the feathers mottled with white and brown in the form 

 of broken transverse bars ; upper tail-coverts shaded with light 

 and dark brown, lateral and terminal ones of fulvous, some with 

 a subterminal spot of fulvous, and all finally fringed with whitish 

 down, and mottled with white and brow"n broken transverse bars 

 at the base ; tail black above, dark brown below, whitish at the 

 base of the feathers, towards the tips barred transversely with 

 light brown and tipped with fulvous ; under tail-coverts fulvous 

 tipped with down ot a paler tint ; shoulders above rufous fawn- 

 colour, mesially shaded with dark-brown ; smallest wing-coverts 

 dark-brown slightly tipped with light-rufous, median coverts fawn- 

 colour, greater coverts blackish-brown, indistinctly barred with 

 ashy-brown, mottled with white near the base of the feathers ; pri- 

 maries black, dark ashy-brown mottled with white at the base ;. 

 secondaries and scapulars blackish-brown barred near the tips 

 with ashy-brown, which colour predominates on those nearest the^ 

 body, the basal interspaces on the inner webs being white ; 

 under surface of the shoulders to the angle of the wing dark- 

 brown tipped with whitish, from thence to the base of the 

 primaries, fulvous shaded with dark-brown ; under primary coverts 

 brown, washed with ashy-brown at the base ; under surface of 

 quills dark-brown, at the base washed with ashy and mottled 

 with white ; the secondaries, inner primaries, and scapulars all 

 crossed more or less distinctly with ashy-brown bars ; throat and 

 remainder of the under surface blackish-brown ; feathers on. 

 lower part of the neck and chest tipped with rufous-fawn, the 

 remainder tipped with whitish-brown, and fringed with white 

 down. In a much younger bird the Avhole of the feathers, 

 including the wing and tail quills, are fringed with down at the 

 tips. 



NestUnf/, Reg. No. A. 18558. "Taken from the nest, about two- 

 or thi'ee days old. Ii'is dark brown, feet whitish. Locality 

 Moolah, Interior, N.S.W., August, 1883." Total length 6 inches, 

 bill from forehead 0'9, from g.ape 0'95 ; tarsus 0"8. Entirel}^ 

 covered with snow-white down, long on the thighs and legs, 

 longest upon the head and hind neck where the down is erect 

 and hairy. 



