Be careful what you ask for, you might get it.
In a previous life, I put a motion sensitive camera on a radio transmitter site to attempt to catch the fool stealing our diesel fuel.
Initially I set it up for motion sensing.
Unless the algorithms for what constitutes a significant movement has improved, be prepared to be alerted to almost anything within sight of the camera.
just a few things that triggered the camera to send me a notification.
- grasshoppers (I think)
- and leaves, again I'm not sure but there was nothing else
Oh, and the transition from day mode (color) to Night mode (Black and white) would send me a notification.
One of the questions I would ask our customers before ordering a camera for them
"Are you intending to use the recorded image for prosecution or just to monitor the location?"
The answer to this would drive the answer about the quality of the camera. It cost a lot more to get the fine details for prosecution.
I wish you well with your choices.