In the Bulgaria/Greece section there are many eastern imperial eagle nests.

In Europe, the Eastern Imperial Eagle is threatened with extinction.

Falco melanaetus - Eastern Imperial Eagle (now Aquila heliaca )

Eastern Imperial Eagle (Vulnerable)

The fauna is represented prominently by the brown bear and the jackal, while the Eurasian lynx and the Eastern imperial eagle have small, but growing populations.

For example, DNA from feathers shed by the Eastern Imperial Eagle shows lower cumulative survival over time than seen for other long-lived raptors.

On a peaceful hike through the forest, the lucky visitor might spot an endangered Eastern imperial eagle or Bonelli's eagle, a Gray wolf, or a wildcat.

The Eastern Imperial Eagle (Aquila heliaca) is a large species of bird of prey that breeds from southeastern Europe to western and central Asia.

The Eastern Imperial Eagle feeds mainly on European Hares, European Hamsters and Common Pheasants as well as a variety of other birds and mammals.

There are many Eastern Imperial Eagle nests in the Bulgaria/Turkey section of the European Green Belt (the uncultivated belt along the former Iron Curtain.)

To investigate the spousal fidelity of eastern imperial eagles, large raptors native to central Asia, a team of surreptitious scientists collected feathers the birds had shed near their nests in northern Kazakhstan.

Formerly, the Iberian Imperial Eagle was considered to be a subspecies of the Eastern Imperial Eagle, but is now widely recognised as a separate species due to differences in morphology, ecology, and molecular characteristics.

Birds of prey include the rare Eastern Imperial Eagle, Greater Spotted Eagle, White-tailed Eagle, Pallas's Fish Eagle, Grey-headed Fish Eagle, and the Lesser Kestrel.

Birds commonly seen in the sanctuary are harriers, Eastern Imperial Eagle, Tawny Eagle, Short-toed Eagle, sparrow, and Little Green Bee-eaters, Black Ibis and Demoiselle Cranes, which stay there till March.

The lakeshore reed beds and wetlands provide critical habitat for hundreds of thousands of wintering water birds, including rare and threatened species such as the Dalmatian Pelican, Ferruginous Duck, Swan, Spotted Eagle, and Eastern Imperial Eagle.

Apart from the resident birds about 160 migrating and vagrant species arrive in Chitwan in autumn from northern latitudes to spend the winter here, among them the Greater Spotted Eagle, Eastern Imperial Eagle and Pallas's Fish-eagle.

Eastern Imperial Eagle (Aquila heliaca)

The Eastern Imperial Eagle (Aquila heliaca) is a large species of bird of prey that breeds from southeastern Europe to western and central Asia.

The forests of Dadia are a well known nature reserve, in which endangered species of birds of prey, including Aquila heliaca and Aquila pomarina, find refuge.