This just crossed my mind today after shooting ground squirrels. Often one will be chirping in the grass or bushes and I can’t see them. Will a thermal monocular work for spotting them in grass or bushes during the day? If so what's the cheapest option? Once a heat signature is identified I can confirm with my scope. I would use it more for locating than identifying. Depending on the geography the sound bounces and they sound like they are somewhere else. What are your guys suggestions?