As detailed in another thread
https://permies.com/t/55178/chickens/critters/chicks-dying, I've had a very rocky time raising chicks this spring. It was so easy our first time! This year, not so much.
I've got five chicks, aged about 10-11 weeks, various unknown breeds. Three are normal sized, two are bantams. I've never had bantams before, and both our little surviving ones have had a tough run of it (we also had several bantam chicks die, described in the thread above). Right now we have one growing,
finally, after a period of losing her feathers and having a perpetually swollen crop (now back to normal). She's just about fully feathered like her normal sized broodmates at last, and while not as big, she can at least hold her own. However, the other bantam is still far behind both her and the others. He's not yet fully feathered, and although he's grown a little, he's actually not much bigger than when we got him at 5 days old. He's lively enough, and eats and drinks just fine, and can do everything the big ones do. He's just so small and less feathered.
I'm worried that he won't be able to stay warm when they move outdoors. The big chicks are really ready to live out there now, as they're just too big for the brooder. At the moment they sleep in it at night, and go outdoors during the day. The bigger bantam is big enough and feathery enough that I'm not concerned about her. But Tiny bantam is so vulnerable, and he can't sleep alone in the brooder--that would be too unkind.
Any suggestions (or commiserations) are welcome. I'm ready to get these chicks outdoors permanently; they're ready too, except Tiny.