Hi there! I believe my ducklings are stressed out but I don't know why. I noticed they have been pulling there feathers out in certain spots. I have pekin crests, and one of my ducks (honey) is a biter and she sometimes nibbles at my other duck (sugar). They're about 3 weeks old and getting bigger by the day. I have them in a Rubbermaid tub that's about 2' 3/4 long, and a 1' 1/2 wide. Could their brooter be too small and that's why they're pulling they're feathers out? Could it be cause they're feathers are coming in soon, and it's natural? Could it be cause honey is pecking at sugar? Thanks for the help!