• Ciro Patricio Romero. March, 2010 – Examining the possible effect of forest area, abundance of snakes and snake species richness on the abundance of Short-toed Eagle, in Spain – M.Sc.Thesis: 110 p. – 
(En).
This is one more article from the Ardeola website:
• IRIBARRER, J.J. and RODRÍGUEZ-ARBELOA, A.., 1973 – Observaciones en un nido del Águila Culebrera (Circaetus gallicus), Navarra 1972 // Ardeola 19(1), 101-106. – 
(Es) /map/.
The text was published in 1973 including some black-and-white images. The placed PDF doesn’t have the best quality, but it’s fairly readable.
Different videos of Short-toed Eagle are being uploaded to YouTube permanently. We told before about this resource and also we used it to insert videos into the site. As an example of the new accessions you can view this one. Watch please flying Short-toed Eagles on the background of the sea and see in detail their flight not for the hunt. Los Alcornocales Natural Park /map/.
Please view an article about factors affecting distribution of Short-toed Eagle in south-eastern Spain /map/ (source – Annales Zoologici Fennici Journal):
• G. Moreno-Rueda, M. Pizarro, 2007 – Snake species richness and shrubland correlate with the short-toed eagle (Circaetus gallicus) distribution in south-eastern Spain // Ann. Zool. Fennici 44: in press. – (En)