The next morning I put  water and some feed in the run. I let everyone out to eat.

When he isn't looking, I grab Oscar and put him in the run.

 He is curious and wanders around looking for stuff to eat, scratching the dirt and loving the freedom from the pen. Until he realizes he can't get to the hens!

Casanova is not a happy camper at all. He starts crowing and crowing. The girls just look at him and go back to eating.

Oscar is one P.O.'d little rooster!