Electrocution and wire collision have various degrees of negative impact on different groups of birds. In this study, 25 power supply lines with a length of 204.1 km were inspected in the Special Protected Areas (SPAs). The total number of the inspected power poles of various types was 2116. A total of 297 victims of 46 different taxa, including 11 orders were identified. The victims of electrocution accounted for 69.02% of all registered deaths. The species that died most often from electrocution belonged to the order Ciconiiformes (27%) and the family Corvidae (29%). The species of highest mortality rate due to electrocution were: White Stork (24.39%), Common Buzzard (12.68%), Hooded Crow (9.76%), and Magpie (8.29%). The species that most often fell victims to collisions with wires were: White Stork (21.7%), Common Buzzard, and Starling with 7.6% each. The highest number of victims was found in flat relief, an average of 3.33 +/- 6.34, followed by the elevated (slanted) relief, 2.05 +/- 4.43. The highest electrocution killing rate was recorded in open grassland habitats, including pastures and abandoned land (KR = 0.11). The highest number of victims, an average of 3.29 +/- 8.75, was established during migration.
