There's discord in Gooseville. We have a nice gaggle of 6 Embden geese, 2 ganders & 4 girls. Up until now they've always stayed together in the yard, parading around like visiting royalty. There is the original pair, Elmer & Gertrude (she is the one in my avatar). The next year we hatched their eggs and kept 1 gander, Edward, and 3 geese, Emily, Gracie, and Gladys. Last year they went through breeding season with little to no problems, mating with each other seemingly at random. But starting last week the son, Edward, has been hassling his father Elmer. Often Elmer can be found off by himself, or with just his original mate, Gertrude. Sometimes we've seen Edward chasing Elmer off by running at him with wings outstretched and biting at his neck. They all stay in a closed pen overnight, but we've been concerned that Edward & Elmer could fight and we'd find one or both of them bloody or dead in the morning. Do ganders try to hurt each other that badly, the way roosters will? For the past few nights we've been keeping Elmer in a big plastic dog crate placed right next to the fence of the goose pen, with the wire front against the wire fence. So they can see each other all night, but cannot touch. Is this necessary? Should I sometimes put Edward in the crate and leave Elmer in the pen with the girl geese? Will we be able to keep them all together again after the breeding season ends? Thank you for your imput!