Interesting. When we had the feral colony on our property and I started to offer them food I started finding dead things on my porch.
I find my once feral cats bring me more gifts then the others. Everyday I get at least one. But they like to leave them at my door outside. I can't even make my husband clean it up because they get upset if anyone else tries to pick them up. Birds, rats,mouse, and anything they can get. I always say thanks and try not to vomit.