Heads shots on rabbits no problem,the above video is what you get and plus, awesome bit of kit well worth the money,there is is lot of user settings you can play with as well.My outlook on life now because i'm at that age lol,is (you only live this life ones).
I don't know what ranges that video was taken at, but it's not what I would call clearly defined for head shooting, possibly because of the mag, as you can see the heads well enough at whatever range that was, if I compare that video to my nv, I prefer my setup for clarity, but I see a definite advantage the thermal has spotting thing