The recognition field survey took place in all seven project countries and lasted since January 2021. More than 78 trained field assistants have surveyed the distribution and transmission power lines and utility poles within the priority project areas along the Danube. The main aim of the recognition survey was to define the initial situation concerning the following collected data: technical parameters of the power lines, data of bird carcasses, faunistic, breeding data, and other important permanent biotic and abiotic factors.