Een bijzondere waarneming bij een paartje Boomvalken Falco subbuteo in de Duivenvoordse Polder
De Takkeling , Volume 27 - Issue 1 p. 81- 82
Observations at a Hobby nest on 30 June 2018 showed that both sexes incubated the eggs (take-over witnessed). As the nest was situated in an electricity pylon, the contents of the nest at the time were unknown, but later observations revealed chicks that successfully fledged.
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