Maybe one of the Dahua PTZ Combo (THERMAL+VISIBLE) Cameras might be a solid alternative, although I bet the price is scary, especially for one with Zoom lens of 100mm, 150mm and 225mm.It would be easy to set up a camera with a good zoom to monitor those areas for movement, but seeing that movement in total darkness would be darn near impossible without some external / auxiliary lighting. As it is right now, I use a Pulsar thermal scope with a wifi connection mounted to a tripod. I can feed that wifi stream to a phone or tablet easily enough. Thing is, I'm not real enthusiastic about leaving a $4000 thermal scope on a flimsy tripod outside.