We have a darling Khaki Campbell duckling, I am not sure if she is 3 or 4 weeks old at this point (forgot to ask at the store how old they were when they arrived) and as she gets bigger she is starting become more......assertive. She has actually developed the BAD habit of biting. She was sitting in my lap last night and I can tell in her eyes she is about to attack, but before I could move she bit my NOSE! and then she went after the skin on my arms and then my eyes and my chin. It actually hurts at times! Is this "normal" duckling behavior (my Mallard is over a year old and never behaved this way) or is this something I need to attempt to "nip in the bud" before it gets worse? If so, HOW? Thanks for ANY help!