Aggressive hatchling - need help

[Quackageddon]

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 Silver Appleyard. Our first two shipments (female Rouen and female Cayuga) (male Harlequin, male Saxony, female Saxony, and female Silver Appleyard) all get along great with their respective shipping groups (with minor disagreements between shipments 1 and 2 due to size differences), but the Blue is being aggressive with her group, constantly biting at them and deliberately chasing them after they run away. They're separated from the others so we can monitor their health before we merge them into the larger container, but I'm concerned the Blue may harm the others she's with..

 

[johntfs]

How old are they all? Is Blue older/larger than the rest in her group?

One thing about ducks is that age/size differential aside, they aren't really equipped for "mortal combat" against one another. Muscovys might be with the claws on their feet.

That said, that's just my opinion based on observations reading and not personal experience. I'd prefer somebody else weigh in on the issue to make sure I'm actually right.

 

[Miss Lydia]

How old are they? Can you post pics of them and also brooder size any way to section her off but keep her with everyone so they can all still see each other?

 

[Quackageddon]

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.

 

[Miss Lydia]

Hopefully others will have ideas I haven’t ever had this happen. They sure are precious!other than giving her her own space an see if that helps