[marcosdumay]

If one sets-up the devices to that chickens or a burglar activate them, that one still owns the pictures, even though the chickens technically took them.

But yeah, the the chickens or a burglar steals the cameras and activate them by their own programing, overriding whatever setting they had before, the camera owner won't own the copyright on the photos anymore.

In other words, it's not that easy to lose the copyrights. The burglar just activating the motion-trigger isn't enough.