My chicks are 3 weeks old now (yay!) and going through their gawky phase as their feathers fill in. I put in a dowel for them to roost on so they wouldn't be laying in poop all the time, getting their pretty new feathers all dirty, but only one, maybe two use it. Is this normal? Will they all "learn" to use it? There's enough room for all of them, and then some, so I don't think it's that they can't find room. Even the one that roosts often will get on the ground with the others and puppy pile with them now and then. Just curious if this is normal or not.