My goslings will be 7 weeks old on Monday. The Pilgrim goose has been pulling out the tail feathers of the Buff for awhile (hence signs of Blue Kote). I believe both to be female. Their coop is almost ready. They have been separate in their brooder for about 2 weeks now. She doesn't seem to bother the 3 ducks. I am concerned because the behavior continues when they are outside, when they have foraging, their pool, etc. Any thoughts or ideas on curbing the behavior would be appreciated!