I have 4 gorgeous porcelain d'uccle babies...7 weeks old. 3 girls 1 boy. They are extremely friendly compared to other babies I've had, they love to come to me, like to be held and played with. the problem is sometimes they bite. Not peck...BITE! None of my chickens have ever bitten me before, not even my babies! I'm not sure if this is something they may outgrow or what, if anything I should do about it.