A NATURAL HISTORY EXPEDITION 
157 
It is fished for by means of nets and fish-traps. Another 
method is practised by night, and consists of lighting a straw 
fire in a canoe so as to produce a tall flame. Attracted by the 
fight, the fish jump towards it and fall into the canoe. 
Nyuna (or Una) 
Scombridce, a small silvery, bait fish 
Migratory Habits. — This fish is to be found all the year 
round in Lamu waters, but is more plentiful from March till 
November. They are said to be much more numerous in 
Arabian waters than here, but it is not known whether they 
actually migrate. 
Haunts. — The nyuna fives in the open sea, but prefers 
land-locked bays with a sandy bottom — like Manda Bay, for 
instance. 
Breeding. — It is not known if they breed here. The roe 
is extremely small, and is described as being like grains of 
sand. Lamu fishermen believe that they do not spawn at 
all, but that they fall from heaven with the rain, as they 
always become much more plentiful as soon as the rainy 
season begins in March. 
Bait and Methods of Catching. — -This fish is caught in nets, 
traps, and with a hook and fine, the best bait being crab meat, 
sea slugs, and octopus meat. 
A NATURAL HISTORY EXPEDITION THROUGH 
THE KEDONG VALLEY, B.E.A. 
By A. Loveridge 
The object of this trip was to collect the eggs of vultures 
and buzzards, which we were told nested in the rocky fastnesses 
of the Kedong Valley, an arid region lying almost due south 
of Lake Naivasha. The only data we had to go upon as to 
the right season to procure eggs was an account of the nesting 
of an augur buzzard, whose eggs hatched on August 22, and 
