We have a LOT of crows in our neighborhood. some of our neighbors actually feed them. This morning,one of our 17 week olds, Lassy flew up on to the fence. A crow came down to sit next to her, and they pecked each other! the crow flew away. Today, I have noticed that the crows are watching the chicks, and they are sitting over them when they eat. This is the first time the crows have really came into our yard, since we got the chicks. Should we be worried? Thanks! Also, the crows are about the same size as the chicks. And, is there any ways to keep them away?