Abstract
I developed a video surveillance system to monitor breeding activity of primary cavity nesters in remote areas. A small video camera was installed inside a nesting cavity and I used wireless transmission of the video signal from the nest tree to a field station equipped with electricity to record behaviour. In a pilot study, I documented parental activities in a nest of the three-toed woodpecker (Picoides tridactylus). The female stayed with the chicks at night two times, whereas the male did this regularly. Adults did not always incubate or brood while on the nest but instead spent some time in motion. The described system is suitable for studying nesting behaviour of species living in remote areas with difficult access, because the proposed wireless transmission of the video signal minimizes manual operations at the nesting tree.
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