Hi! Thanks for all the answers so far. I'm also a newbie and have several questions...
1. Vertical space question. For two weeks I've had them in a large Rubbermaid container. They seem pretty happy over all. I will be moving them out to the garage this weekend though as they are starting to be a bit more rambunctious and kick up feathers and dust. My question is about providing vertical space for them while they're still in the brooder. I don't really want to leave them without a lid because then they'll be out of the box in no time and pooping all over my garage. Will they be ok with just 2 or 3 feet of air space to jump/flap around or do I really need to work on constructing something out of cardboard with higher walls so that I'm not containing them as much. Last night there was a moth flying around the heat lamp which is on the other side of the wire mesh I have on top of their container and they were going nuts trying to get at it.
1. Well, they don't need to flap up, but they do like it! I think that (2-3ft )should be a lot and you also don't want them to get burnt by jumping into the heat lamp. If you want to make a cardboard wall thingy, why not? If you don't want to, okay!
2. General handling question. I'm totally new to this experience and I have been surprised at how fast they are growing. To be honest I'm starting to be intimidated by the process because they're kind of wild. They're generally willing to eat from my hand, so that's good. And one or two don't mind being held. The BO always runs like crazy, though is calm when I hold her. But the Ameraucauna, man... she hates being held. Struggles and complains the whole time. And she's the biggest so far which makes me worry how I'll handle her as she gets even stronger! I have a 2 year old daughter and another baby due in a few weeks, so I'm really keen on helping these birds to become fairly calm. Are they just being juveniles right now? Are they likely to mellow out as they get a little older? Are there better ways to hold them or approach them so they'll calm down and learn to trust me? Maybe it just takes time (for all of us) after all it's only been 2 weeks.
2. Well, sometimes teenage stage chicks can be plain old brats! Are you accessing the brooder to get them from the top? It may be scaring them, like your hand is a hawk. Announce your approach before sticking hand in box. It is possible they could mellow out, but keep handling them! My 10wk old Barred Rock (not sure on gender) follows be around like a puppy dog and sits on my lap-all I did was rescue him from the big chickens once and feed them, that was totally all his idea. I like it, and jope it stays that way!
3. Health question: For about a week now my light Brahma has been sneezing. She seems ok other than that. She's still eating and drinking and pooping. Though she does seem to be developing more slowly than the others (RIR, BO, Ameraucauna) and is definitely not as rowdy as the other three. I have been debating adding some antibiotics to the water, but haven't done so yet. It sounds like either Tetetracycline or Duramycin would be good options. Do you have any recommendations? Should I just keep watching her and hope she eventually regains full strength without the meds? I already have vitamins/electrolytes/probiotics in their water btw.
3. Try ACV (Apple Cider Vinegar) in the water if your not already, just a splash. Now, Bramha's are a calmer breed, could explain the calmness. I try to stay away from antibiotics, BUT, I have used them. :/
Keep an eye on this chick, perhaps he keeps getting dust in his nose (what type of bedding), if he gets worse or doesnt improve I recommend posting in raising chicks or the emergencies section 
Thanks for taking the time to help a newcomer! Really looking forward to getting some fresh eggs this summer!
