How many chicks can a hen care for?

[rbrink21]

I have a broody Black Austrolorp and we want to get her some chicks. She's currently sitting on 12 eggs. The minimum order is 25 chicks. Can she possibly take care of this many or do we need to set up a brooder as well?

 

[Arcane Araucana]

I'd set up the brooder - or get a couple of chick nannies!