Agressive Roo?

[someplumbcoop]

I have 6 6 month old australorps. One of them is a rooster. He is usually great with the girls but lately he has been chasing them around sometimes. Also sometimes he will peck them. I can't tell if he is picking on just one of them or all them. Hes never been rough with them before. This is my first batch of chickens so im new to this

Is this normal or is he to aggressive?

 

[Pinky]

Sounds normal to me. Sometimes hens don't like the attention a rooster gives them so he chases them.