The Spanish imperial eagle averages 2.5–3.5 kg, 78–82 cm in length and 180–210 cm in wingspan.
The Spanish Imperial Eagle is restricted to the Iberian Peninsula.
Only the coloration of the marginal upperwing coverts of adult birds is a reliable difference with the similar Eastern Imperial Eagle. 
The Spanish Imperial Eagle has white edges on the front of the upper and underwings (clearly shown of the photo) which the Eastern Imperial Eagle lacks.

Monfragüe National Park, Extremadura, Spain, 4 May 2012