OWLS AND DIURNAL BIRDS OF PREY. 339 
hooked, and its cutting edge between the hook and the cere 
has a wavy outline or “festoon”’; the feathers of the lores— 
i.e., the space in front of the eye—are mere bristles or end in 
bristles. Exceptions to these general characteristics serve to 
mark out several of the groups, as will be noted below :— 
Group I.: Hawk Hagles.—Legs feathered all round down 
to the toes. Six large or fairly large species. 
Group II.: Serpent and Fish Eagles.—Three large, stoutly- 
built species, well over 20 inches in length. Tarsus over 
3inches in length, and only partially feathered. Wings broad 
and rounded, long in the Fish Eagles, and short in the 
Serpent Eagle. 
Group IIf.: Kites and allied Species —Two fairly large 
and one small species. Tarsus short, only about half as long 
again as the measurement in a straight line from the gape to 
the tip of the bill. Toes short. 
GroupIV.: Harriers —Four species: one fairly large, three 
of medium size. Form slender; wings long and pointed ; 
tarsus long and slender, feathered im front only at the base, 
the naked portion covered in front with transverse shields and 
behind with polygonal scales. 
Group V.: Buzzards——One rare species of medium size. 
Wings long ; tarsus long and fairly stout, feathered in front 
to halfway down or more, the naked portion covered both in 
front and behind with transverse shields. 
Group VI.: Hawks.—Three small species. Wings short 
and rounded ; tarsus long. 
Group VII.; Honey Buzzards.—One rarish species of fairly 
large size. Face, lores, and eyelids covered with small over- 
lapping scale-like feathers. Wings long, tarsus short, toes 
very long and scaly. 
Group VIII.: Bazas.—Two rare, smallish species. Bill 
with two “teeth ” or notches on the upper mandible opposite 
the end of the lower mandible. Head crested; wings 
moderate ; first quill much shorter than fourth.* Nostrils 
linear. 

* In young birds there is at times only one notch, but such birds may 
be distinguished from Falcons by the shortness of the first quill. 
