90 8 TBI ATE D EAGLE. 
STRIATED EAGLE. 
Sixce my description of Aquila heliaca was printed off,' I have 
received from Dr. Guillen, of Kustendji, another pair of skins of the 
above bird, with two eggs taken from the nest upon which the male 
bird was sitting when captured. These specimens so decidedly confirm 
the breeding habits and the character of the eggs, as distinguished 
from those of Aquila heliaca, that I am strongly of opiuion that the 
bird will prove distinct. 
We have no proof that this bird ever does assume the dark plumage 
and white scapulars of A. heliaca. I am happy to say, however, that 
I have made arrangements with Mr. Charles Edward Cullen, who has 
kindly promised next year to take the young of each from the nest 
and bring them up. Lord Lilford has also offered to receive a pair of 
each into his fine collection of live birds at Lilford, and thus the 
question will be finally set at rest. In the meantime I figure the male 
and female striated bird and their eggs, which will assist us in the 
inquiry. 
In addition to the reasons before adduced by me, which bear against 
the assumption that the Striated Eagle is the immature A. heliaca, I 
will now place my objections in a serial form. — 
1. — If the hypothesis of such a change in the plumage of this bird 
were true, then we should witness the extraordinary fact of large full- 
grown Eagles changing in one year from a cream-colour more or less 
rufous into the well-known black brown plumage with white scapulars 
of Aquila heliaca. 
2. — We should have an Eagle one year building in the striated 
plumage upon rocks close to the ground, and the next changing this 
locality to a high tree. 
3. — We should have an Eagle laying one year an egg with red 
markings, and the next one third larger with the well-known washed- 
out purple spots of the ovum of A. heliaca. 
4. — The immature plumage of the Spanish form of Aquila impcrialis, 
hastily I think separated from A. heliaca, has no striated plumage, as 
