Quackers, one of my two 7 week old Pekins, has all of a sudden decided this morning to start picking on Goose, my 5 week old Mallard. She won't leave her along. Goose will be napping and Quackers runs full blast - head down - at her and grabs a wing and won't let go. Goose now has a bloody flight feather that's just starting to come in. I put some BlueKote on it, but that hasn't helped. She chases her away from the water, from the food, from everything. If goose somewhere - Quackers wants to be in that spot. They've all lived together since they were a couple weeks old and we've never had an issue like this. Goose is just doing her best to run as soon as she see's Quackers coming. Quackers doesn't touch Ducky (the other Pekin) or Daffy (5 week old Cayuga that's bonded with Goose). I've been thinking about creating a small "time out" pen in our run for Quackers - any thoughts?