Can someone suggest a container for 12 duckling brooder?

[Miss Lydia]

I have brooded that many. The 30 gallon tub may get you passed the first days when they are more fragile. You are correct about the 50 gallon tub getting too small pretty quickly. We have an outdoor brooder that we made. It has a wood box that is 3x3x3 and hardware cloth section 3x5. After a couple weeks that becomes just sleeping quarters and we attach a half circle of fence for space to use during the day. I do have a heating pad in the box the first few weeks.

Any pictures?

 

[Yardmom]

I don't have any brooder babies right now. A rabbit is currently the resident, but here is a couple pics. The extra fencing is attached at the corners of the door side.

 

[LondonChicken]

Thank you all so much for the awesome suggestions! I am currently constructing their pen and should be done by today with only their house needing to be built next.

I modified a chicken tractor to give them field trips and will hopefully be able to transition them outside soon (even if part of the day) with these warm days we are having.

Thank you all so much again!