Nope, they have a belly full of newly absorbed yolk. I wait until the last has gone into the brooder, or the first has been there 24 hours. Introduce water first, and tap on the edge with your finger or dip their beaks in it (easier said than done). When they start to make their way over to...
Some say until the htach is done or up to two days or so, depending on which comes first. Personally after about two and a half hours and they are as dry as they can get in 70-80% humidity. Then into a really warm brooder.