Locality. 
10 RAPACES. FALCO. EAGuys. 
turity; the slow advance of our knowledge in regard to this, 
as well as other facts connected with this branch of science, 
will rather be a matter of regret than surprise. Many cf our 
ornithological works, also, can only be regarded as compila- 
tions from the essays of earlier authors, in which the errors, 
arising from such deficiency of information as must naturally 
attend the infancy of a new pursuit, may be expected; and 
which errors have too often, without any attempt at further 
scrutiny, been faithfully transcribed. 
The similarity in habits and manners, as well as in essen- 
tial specific characters, between the Cinereous and Sea Eagle, 
first led me to suppose that they were of the same species, 
and that the difference of plumage might only proceed from 
the respective ages of the individuals, as appears in many 
other instances. An opportunity having occurred of watch- 
ing the progress of the young Sea Hagle from its earliest age, 
I eagerly availed myself of it, and witnessed the gradual and 
interesting changes it underwent, till it had finally acquired 
the plumage of the adult, or Cinereous Eagle. During this 
process, I was happy to find, that my supposition had been 
anticipated, and the fact ascertained in France, by that emi- 
nent naturalist Mons. Cuvier *, as well as by Mons. TEm- 
MINCK. 
The Cinereous Eagle is more numerous than the preceding 
species, and is found in all the northern and mountainous ma- 
ritime districts of Scotland and Ireland, and in the Orkney 
and Shetland Isles. It is also of a more roving disposition, 
and has frequently been killed in England. 
Montacu+ mentions several instances, and adds, that 
scarcely a year passes without some of these birds being seen 
in the New Forest in Hampshire. In Northumberland, the 
Cinereous Eagle has frequently been seen during the winter 
months. About six years ago, a fine specimen was killed at 
* Cuvier, Reg. Anim. tom. i. p. 35.; and TEMMINCK, tom. i. p. 49. 
+ Monracu, Ornith. Dict. Supplement, art. Cinereous Eagle. 
