I have a 6 month old silkie rooster who this morning I caught breeding with one of my 10 week old frizzles. Poor thing was screaming its head off I thought something was killing it! He's been around them since they hatched and has always been very friendly and paid them no attention up until now. He has two other mature hens, but one of them does tend to put up a bit of a fight. He's usually very gentle with the older hens (which is why one bullies him a bit I think) so I want to keep him for breeding. Is this normal behaviour for him to be trying to mate with pullets that are so young?