Thermal imaging systems are most commonly associated with the detection of heat leakage from buildings, inspection of defects on technical installations or building protection against the unwanted entry of undesirable persons. Interestingly, these thermo-vision systems have been recently and rapidly used in agriculture and game management as well. The purpose of this usage lies mainly in the effort to locate and count game. And it does not concern just the purpose of game hunting. On the contrary, the thermal systems address a commonly debated issue, e.g. the protection of baby animals in the fields during harvest and a control of the number of pieces of rare game in game preserves.