I concur with Big G on Moultrie. There’s a Moultrie Game Management system website that with certain cameras (and a monthly subscription fee to a website) your pictures can be automatically uploaded to a website each night and the camera will delete the pictures that are uploaded and be ready for capturing again the next day. Then your camera doesn’t fill up, it runs until the batteries run out (and I believe they sell solar panels that will repower the camera during the day also). Only thing to be careful of, is if your cameras are put in a place that will have connectivity to upload to Moultrie’s website. I believe it uses cellular phone technology to connect, but I could be wrong on that.