Monitoring pohybové aktivity sýčka obecného

In the last decades, population of the little owl (Athene noctua) has rapidly decreased and therefore reintroduction of this bird has been started. Wastage of suitable environment, absence of nesting cavities, overpopulation of predators and also improper management of grasslands and farmlands are the main reasons of low number of the little owl population. This thesis deals with tracking of four little owl individuals which were put into the Napajedla - Pěnné area. These owls were equipped with radio treasmitters for telemetry tracking. Data were collected once a week for five moths, from September to February, and were statistically evaluated. The main aim of the resent thesis was to describe behaviour of the little owls after their release. The birds defined their territories within a few days, the average home range was from 13.4 ha to 22.4 ha. The hunting habitats were different, depending on the month of tracking: with the air temperature decreasing, the owls preferred hunting on pastures, fields and nearby farm buildings to other habitats. In winter, nightly distace from roosts was bigger than in autumn. The average distance was 58 m in September, 206 m in November and 312 m in January. In this monitoring, individual foraging preferences were evaluated