Interesting case, of neighbours watching one's land by camera. As Bob says, it's no different from being seen with the naked eye, but ... If the neighbour's naked eye is present one can choose to interact or not with said neighbour. But the camera is presumably watching even if the neighbour is out of the country, and /or may be on motion-detect (for the wildlife) so is recording one without human intervention and any interaction is one-sided.
The neighbour's assertion it was for the children to see the wildlife adds another dimension, our old friend the "what about the children" cry. Children watch the camera footage and see naked grown-ups. Parents then complain their children have been despoiled. Officious law officers take the parents' side, and only after a long and expensive court battle does the right to privacy (with luck) win out over the "protection" of the minors.
peter