Just a heads up i have one camera that takes pics. Everytime i go and swap out the cards it has several hundred photos on there but very few of deer. Most of the pics though are of nothing. I you got a good photo program go through the pics one by one back and forth. If you see trees or branches moving just the slightest it may be your camera is picking up these movements from wind and triggering. Its what one of mine does. Will help you eliminate whether a slow trigger speed or just ambient motion being the reason.