I've read a couple posts on this however I don't think mine have a nutrition problem. They don't pull their feathers out or anything it's only when there's a feather on the floor that one will grab it with others chasing it all over. I can't tell if they are trying to eat it on purpose or not but when I grab the feather from them about half the feather would be gone from being in their beak. They are 5 weeks old (6 of them) and when they were smaller if they jumped and the little feathers came off them they would eat them. I give them boiled eggs every few days for the past week or so. Is it normal for them to do this? (I try taking away all the feathers I find in their cage so I won't have to worry and I'm going to start giving them grit in the next few weeks) any ideas/tips?