Do Do you think broody Plymouth Rock (full-size) will be a good mom for bantams?

[Chicalina]

I would have feed and water away from her nest. Not within reach.
She needs to get off the eggs usually daily. She also needs to poop and you dont want that to happen in the nest.
Chick feed is good for her.

I only put within reach during the last 3 days lockdown period when I don't lift her off the nest.

 

[Show Sebright]

How can I stop her from stealing the eggs for the other hen box? She had 9 eggs under her yesterday.

 

[50-45-1]

Unless you confine her, it is likely to continue. Other hens may also lay there eggs in her nest. Resulting in staggered batch. (not all eggs to hatch at the same time)
Not good.