Aggressive birds are a guest-created problem. People feed them, even though I assume that most people realize the potential results of their behavior. I'm sure parents don't want to spoil "little Billy's" enjoyment, but it's the responsible thing to do. When my wife and I see people feeding wildlife, we usually have a "louder than normal" conversation about how unfortunate it is that people don't know the negative consequences of their behavior. We avoid confrontation, so we don't say anything directly to the guests. Disney might also want to post more information around the parks and resorts asking for guest compliance as well. I doubt that cast members get involved, as perhaps they should, when they witness feeding. Sam