First observations of the movements of the Long-eared owl (Asio otus, Strigidae, Aves) using GPS-GSM telemetry in the European part of Russia

In the Crane Homeland Nature Reserve, 56.7573° N, 37.7920° E, Moscow Region, Russian Federation, a total of 186 long-eared owls were ringed between 2000 and 2023. Over those years, only one ring was returned. The young owl was ringed and released on 07.20.2007 in the outskirts of Dmitrovka, 56.747502° N, 37.738124° E, Taldomsky District, Moscow Region. After 16 years, on 12.02.2023, the ring without the bird was found near the town of Velka Krash in the Olomouc region, Czech Republic. The distance between the ring release and return amounted to 1510 km in a south-westerly direction. In 2021, as part of the Russian-German ICARUS program, for the first time for Russia and in general in Eurasia, 5 satellite and 4 GPS-GSM transmitters were attached to young or adult long-eared owls. Only one transmitter which belongs to the tagged owl from Dmitrovka started working next year. Transmitter data covered the period from 23.04 to 14.08. The tagged owl was nesting in the second year of its life at Beshenkovo, 56.4342° N, 37.7788° E, Dmitrovsky District, Moscow Region. The distance between the ringing and first nesting sites amounted to 34.5 km. The nesting was successful, and the pair raised 5 fledglings. According to the data transmitted, the tagged bird flew and hunted not more than 1.3 km away from the nest.