I'm really worried about one of my new D'uccle chicks. We've raised plenty of chicks, and I've had my fair share of pasty butt. We always treat it the same way, and it usually works just fine. But Marguerite (my porcelain baby) has been having pasty butt over and over and over. We clean her off every time, just like all our chicks before, we use the hair-dryer on her rear end feathers so her temp doesn't drop (on low, of course), we put vaseline so the poop doesn't stick (this is completely safe, we've done it on all of our chickens and they are happy and healthy). The thing is, the recurring pasty butt isn't her only problem. On top of that, she's a lot more wobbly and unsteady on her feet than the others. Also, every time she goes to poop (even when her rear end is completely clean) she just squats there and makes pitiful chirping noises, and no poop comes out. Almost like when a hen is having trouble laying an egg. The chicks are almost a week old now, the others are already flying around. I see Marguerite being active sometimes, and she eats and drinks fine. They always have clean food and water, a heat lamp that is plenty warm, and a spot to escape the heat. I don't know what else to do for her, can anyone help????