This time fossil remains of an ancient species of Circaetus were found in the vicinity of the Varshets town (Northwestern Bulgaria) /map/. This species had lived in SE Europe about 2.2-2.4 millions of years ago:
• Z. Boev, 2015 – An Early Pleistocene Snake Eagle, Circaetus haemusensis sp. n. (Aves, Accipitriformes) from Varshets, Northwestern Bulgaria // Acta zool. bulg., 67 (1): pp. 127-138. – 
(En).
The current article, like the prevous one, is represented on a website of the journal Acta zoologica bulgarica.