518 Mr. G. H. Gurney on 
154. Falco cuvieri. Cuvier’s Falcon. 
Fulco cuvieri Smith. 
Iris brown ; bill dark slate-coloured; legs yellow. 
Cuvier’s Falcon was decidedly rare. A female was shot 
as it flew high over the Hotel garden at Nairobi, but the 
species was never seen again. 
155. Tinntjnculus alaudarius. Common Kestrel. 
Tinnunculus alaudarius Linn. 
Not at all common in my experience, and only obtained 
at Naivasha. 
156. Tinnunculus cenchris. Lesser Kestrel. 
Tinnunculus cenchris Naumann. 
Iris dark brown; bill light blue, yellow at base, tip 
black; feet yellow. 
Great numbers of Lesser Kestrels were attracted by a 
large prairie fire which broke out near our camp on the 
Kauti Plains, and it was extraordinary to watch them flying 
repeatedly through the dense clouds of smoke right into the 
flames in order to catch the insects. They were common 
elsewhere. 
157. Haliaetus vocifer. Vociferous Sea-Eagle. 
Haliaetus vocifer (Daud.). 
Iris yellow-brown; bill black, yellow at base; legs 
whitish-yellow. 
The Vociferous Sea-Eagle was common at Naivasha, and 
was also constantly seen perched on the tops of tall trees 
by rivers. A nest which I believe to have belonged to this 
species was passed one day near the Thika. I had no 
opportunity of getting up to it, but from below it appeared 
a very large structure. 
158. Helotarsus ecaudatus. Bateleur Eagle. 
Helotarsus ecaudatus Gray. 
* Bill black; iris brown; feet coral-red. 
Not uncommon near Kallima Theki. 
