I got my new sebatopol babies 2 weeks ago. This week has been warm so I've started taking them outside some to introduce to my older ganders. One of my boys seemed really sweet and wanted them close....the other was not so sweet and hissed and bit one of the babies on their little back So I put the big boys in the pen and let the babies loose where the older ones can see them but not touch. Is this normal? Everywhere I read says what good paren'ts ganders are...but my one sure didn't seem like a good daddy....and he is my sweetest boy! Is it a jealousy issue? Or is this normal behavior getting used to the babies?