The paper listed below is available on a website of Mediterranean Raptor Migration Network. To know the latest news of this non-profit community just follow the FB page of the organisation.
• Panuccio M., Lucia G., Agostini N., Ottonello D. & Bogliani G., 2014 – Motion capacity, geography and ecological features explain the present distribution of a migratory top predator // Ecological Research DOI: 10.1007/s11284-014-1226-2. – 
(En).