Yes, a camera can help. I have seen videos of hens moving eggs.We've thought of snakes, but it's been kind of cold for them to be out and about. It's not impossible. The coop is up in the air far enough the birds walk under it. The snake would have to crawl up the ramp, get the eggs and crawl back down the ramp without being seen by the cock or mama birds. We need a trail cam to see what's going on.