They're all a day old, and the container is a plastic storage tote (24"L×16"W×13"H) that we only use for their first two days with us to monitor health. They're all quite small, and the others aren't aggressive at all, even while the Blue is bullying them.
My family and I have recently started raising ducks, and while we were planning on 4, an unplanned male was shipped to us and we're now up to 10 to allow for 4 females per drake. Our most recent shipment arrived today, all females consisting of a Blue Swedish, a Welsh Harlequin, a Buff, and a...