I'm not talking about the food spreading disease necessarily there are many kinds of diseases and parasites and they don't all use food vectors for infection. It's seems pretty obvious to me that when more animals are in contact with each other the risk is higher. Same could be said for predation, predictability and grouping lends itself to predation. One example I can think of is a water hole in Africa. While not exactly the same thing I can see the parrellel. Seems like pretty simple logic to me. Also, an important thing to remember, just because we don't see something (i.e. increased risk) doesn't mean it does not exist. Quail and deer are two very different species with different feeding strategies, predators, predator aviodance strategies and behavior. I know alot of you guys dislike what biologists say, but they don't say it for no reason. The majority of them want hunters and the herd to succeed or they wouldn't be in the field. And I'm not saying that you should never engage in supplemental feeding, I'm just trying in my own small way to make some of the risks known.