Photos (1024×768 px) of Circaetus gallicus heptneri (© Askar Isabekov) and some information (En) on the traits of Short-toed Eagle population in Kazakstan. Also see the page dedicated to the nominal subspecies. The site has bilingual content now.
In 2002 Jean-Pierre Malafosse /map/ and Bernard Joubert /map/ managed to unionize French Short-toed Eagle lovers. We would like to point to in a sense the composite work that is known by the name of La Plume du Circaète – 
(Fr) {rough translation} and was realized in 2003 by the agency of the Ligue pour la Protection des Oiseaux (source – LPO Mission Rapaces page). Now the second pdf-file – La Plume du Circaète #4 – (Fr) {rough translation} is available too.
This is the presentation of two old texts of the first part of the XX century. One of them was written by Viktor Zebe:
• Viktor Zebe, Oktober 1936 – Zur biologie des Schlangenadlers [Biology of the Short-toed Eagle] – Berichte des Vereins Schlesicher Ornithologen /map/. Just read the translation of it (Fr) from German made by one of the greatest adepts in Short-toed Eagles in France – Yves Boudoint.
The second is Nikolay Gavrilenko‘s work, that is mentioned in the first one:
• Гавриленко Н.И., 1929 – Птицы Полтавщины. Змееяд [The birds of the Government of Poltava. Short-toed Eagle] // Полтава: Издание Полтавского союза охотников: 28-30 (Ru) /map/.
Just download a scan of the part dedicated to all birds of prey on the Ukrainian Birds of Prey Research Centre website.
See photos (© Sergey Domashevsky) made while ringing a young Short-toed Eagle in nest in Kiev Region (Central Ukraine) /map/ on July 27th:
This is one more general information on the species:
• MALAFOSSE J.-P. et JOUBERT B., 2004 – Circaète Jean-le-Blanc Circaetus gallicus (Gmelin) 1788 // in Thiollay J.-M. et Bretagnolle V. (coord.), Rapaces nicheurs de France, Distribution, effectifs et conservation, Delachaux et Niestlé, Paris: pp. 60-65. (Fr).
…but, Jean-Pierre Malafosse with group of researchers had traced more than 400 cases of Short-toed Eagles breeding just till 2000 in the so-called Massif Central /map/. And their researches are continuing. Just think about it…
Bernard Joubert /map/ is an author of the “Le Circaète Jean-le-Blanc” book; see an extract from it (Fr) about the youngs’ behaviour after leaving the nests.
We have transformed some articles from the Sunbird.it (see the post Guido Premuda’s works) into the form that is suitable for the machine translation:
• PREMUDA G., 2002 – Primi dati sulla migrazione post-riproduttiva del Biancone, Circaetus gallicus, nelle Alpi Apuane [Autumn migration of Short-toed Eagle in the Apuane Alps] // Rivista Italiana di Ornitologia, 71(2): 181-186. (It).
• AGOSTINI N., BAGHINO L., COLEIRO C., CORBI F. & PREMUDA G., 2002 – Circuitous autumn migration in Short-toed Eagle Circaetus gallicus // Journal of Raptor Research., 36(2): 111-114. (En).
• PREMUDA G., 2004 – La migrazione del Biancone Circaetus gallicus in Italia: stato delle conoscenze attuali [The Short-toed Eagle migration in Italy: current state of knowledge]. In: Atti del Convegno “Rapaci in volo verso l’Appennino” // Corpo Forestale dello Stato – Gestione ex ASFD di Lucca – Riserva Naturale Statale dell’Orecchiella, 21-24. (It).
• PREMUDA G., 2004 – Osservazione di un dormitorio di Biancone, Circaetus gallicus, e considerazioni sul piumaggio degli immaturi [Observation of a roost composed of seven individuals of Short-toed Eagle and notes about plumage of immatures] // Rivista Italiana di Ornitologia, 74(1): 76-80. (It).
Here you can acquaint yourself with the work on the wintering of Short-toed Eagle and Booted Eagle in Spain:
• José Enrique Martínes y José Antonio Sánchez-Zapata, 1999 – Invernada de Aguililla Calzada (Hieraaetus pennatus) y Culebrera Europea (Circaetus gallicus) en España [Wintering of Booted Eagles and Short-toed Eagles in Spain] // Ardeola 46 (1): 93-96 – (Es) (source – Ardeola website).
…and with the abstract of an article about Greek Short-toed Eagles:
• D.E. Bakaloudis, C.G. Vlachos, G.J. Holloway, 1998 – Habitat Use by Short-Toed Eagles Circaetus gallicus and Their Reptilian Prey During the Breeding Season in Dadia Forest (North-Eastern Greece) // Journal of Applied Ecology, Vol. 35, No. 6: 821-828 (En) /map/ (source – the JSTOR database).