The Imperial Eagle (Aquila heliaca) has suffered a rapid decline in Europe in recent decades and is now very rare or extinct in many areas. It is known to be increasing only in Hungary, thanks to specific conservation programs. The population is stable but not increasing. The species is endangered especially by human activities. One of the main factors of mortality is electrocution, relevant especially for juveniles (Bagyura et al. 2002, Nagy & Demeter 2006, Karyakin et al. 2009). Proximity to nests of non-insulated medium-voltage poles poses a fatal risk for many young and inexperienced birds with lower ability to fly, as they try to take off or land on poles (APLIC 2006).

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