34 
Native of North America, where its food is the fish which it catches 
in the great rivers and lakes. It is sometimes, but very rarely, seen 
wild in the North of Europe. The feathers on the heads of the young 
of this species are brown. The white-headed Eagle takes its prey out 
of the water, darting at it while swimming and striking it with its talons. 
— Adult specimens have been presented by the late Joshua Brookes, 
Esq., and by Mr. Leadbeater. 
Those now in the collection are young, and have not yet acquired the 
white feathers on the head which distinguish the mature bird. 
WHITE-TAILED ok CINEREOUS SEA-EAGLES. 
Haliaetus Albieilla, Sav. Falco Albicilla, Gmel. Vultur Albiulla, 
Linn. Le Grand Pygargue, Buff. L’Aigle Pygargue, Temm. 
Specimens of these birds in mature as well as immature plumage are 
exhibited. When mature, their tails are white and their general colour 
cinereous brown, lighter about the head : when young, the tail-feathers, 
as well as most of the rest of the body, are a darker brown slightly 
mottled ■ and in approaching to maturity, intermediate changes between 
the two states are observable. They are found frequently in the Southern 
parts of Great Britain, but are abundant on the neighbouring coasts of 
the Continent of Europe. Their principal food is fish, but they also 
prey on aquatic birds and on quadrupeds. 
A remarkably light-coloured variety from Ireland is at present ex- 
hibited. Generally no more than two specimens of each species of 
Eagle are exhibited j but the Society has been indebted at various times 
for presents of Cinereous and Golden Eagles to Thomas William Coventry, 
Esq., to John Morgan, Esq., to George Watson Taylor, Esq., to Henry 
Meux, Esq., to Charles Barclay, Esq., to Jeremiah Simpson, Esq., and 
to Abel Moysey, Esq. 
In Moveable Cages (32*) on the adjoining Lawn are ex- 
hibited the 
SOUTH AFRICAN EAGLE. 
Aquila Choka, Smith. Falco rapax, Temm. 
From the Cape of Good Hope. — Presented by the Hon. J. T. Leslie 
Melville. 
KING VULTURE. 
Sarcorhamphus Papa, Dumeril. Vultur Papa, Linn. 
Inhabits the warmest parts of America. — Presented by Mrs. Fleming. 
Near the Eagles’ House is the Guinea Pig Enclosure (33). 
These animals are commonly known by the name of Guinea 
Pigs ; but the species is properly denominated 
THE RESTLESS CAVY. 
Cavia Cobava, Gmel. Ancema Cobaya, F. Cuv. Mus Porcellus, 
Linn. Le Cochon d’Inde, Buff. 
