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Several records of Short-toed Snake Eagle at the boundaries of the species range were reported this summer. Local birders informed about observation of an eagle again in the United Kingdom, at Ashdown Forest /map/ in East Sussex: it was seen several times since June 21^st. Unfortunately, the age of that bird has remained unknown. Four years earlier, a young Short-toed Eagle had been observed at Morden Bog /map/, near Wareham.

At the opposite side of the range’s northern boundary, not far from Barnaul /map/, the administrative centre of the Altai Krai, a Short-toed Eagle was recorded this year too. Photos of it are available on the Birds of Siberia website. This time it was an adult bird, as well as the previous one observed in 2016. Also, this summer has brought many encounters with ST Eagles to birders in Kazakhstan, just enjoy the pictures.

Please read the text written by Guido Premuda together with Andrea Corso dedicated to determination of Short-toed Eagle’s age and sex by plumage characters: Il piumaggio del Biancone: età, sesso e morfismo (It) which could be used as a hand book for the field work.
Also the photo and a list of full texts of Premuda’s articles dedicated to Short-toed Eagle can be found here (the source is his own website – Sunbird.it):

• PREMUDA G., 2004 – Prime osservazioni della migrazione primaverile “a circuito” del Biancone, Circaetus gallicus, nelle Alpi Apuane // Rivista Italiana di Ornitologia, 74 (2): 119-124. – (It).

• PREMUDA G., 2004 – Osservazione di un dormitorio di Biancone, Circaetus gallicus, e considerazioni sul piumaggio degli immaturi // Rivista Italiana di Ornitologia, 74(1): 76-80. – (It) (translatable form).

• PREMUDA G., 2004 – La migrazione del Biancone Circaetus gallicus in Italia: stato delle conoscenze attuali. 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) (translatable form).

• AGOSTINI N., BAGHINO L., PANUCCIO M., PREMUDA G. & PROVENZA A., 2004 – The autumn migration strategies of adult and juvenile short-toed eagles Circaetus gallicus in the central Mediterranean // Avocetta, 28: 25-28. – (En).

• PREMUDA G., 2002 – Primi dati sulla migrazione post-riproduttiva del Biancone, Circaetus gallicus, nelle Alpi Apuane // Rivista Italiana di Ornitologia, 71(2): 181-186. – (It) (translatable form).

• 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) (translatable form).

• AGOSTINI N., BAGHINO L., PANUCCIO, M. & PREMUDA G., 2002 – A conservative strategy in migrating Short-toed Eagles Circaetus gallicus // Ardeola, 49(2): 287-291. – (En).

Few photos (resolution about 1024×768 px) made by Walter Mascarini and one variant (It) of the common popular species descriptions of Short-toed Eagle written by Angelo Battaglia. This portfolio is located on the Quaderni di birdwatching site.