Results
Within the three breeding seasons, a total of 371 predator exposure trials were carried out at 248 red kite broods, over 105 catching days (Table 1). The minimum age of the brood during predator exposure trials was 6 days and the maximum age 74 days (mean ± sd = 34.7 ± 16.5 d, n = 371). The broods contained between 0 and 3 nestlings (mean ± sd = 1.8 ± 0.7 nestlings, n = 371) with 1.5 ± 0.6 nestlings in 2016 (n = 51), 1.9 ± 0.7 nestlings in 2017 (n = 149), and 1.8 ± 0.7 nestlings in 2018 (n = 171). Mean ambient temperature during the attempts was 20.6 ± 4.3 °C (min = 7 °C, max = 32.5 °C, n = 371), and the distance between the eagle owl and red kite nests was 47.3 ± 29 m (n = 371).