71 
whose authority ornithologists have conti- 
nued it as a distinct species. Dr. Shaw, on 
the authority of Monsieur Daudin, has given 
this bird as one of the varieties to which the 
Common Falcon is subject; but from its su- 
perior size, and predominance of white plu- 
mage, we should suspect it to be a variety 
of the Jerfalcon ; as such we have arranged 
it under that head. 
According to Mr. P. it was of the " size 
of a Buzzard; bill black; cere and legs 
yellow ; irides pale yellow ; crown and hind 
part of the neck white, spotted with light 
reddish brown ; back and scapulars of the 
same colour, edged with white ; quill feathers 
dusky, barred with ash colour ; under side 
of the neck, breast, belly, and thighs white; 
the two first, also the beginning of the breast 
marked with a few rusty spots ; rump white; 
middle feathers of the tail barred with white, 
and a deep brown, the others with a lighter 
and darker brown ; the legs very strong." 
