Malcontents!

We've been letting our hens out of their pen the past few nights to roam the summer garden a few hours before dark. We have noticed that they have become very dissatisfied being in their pen, which should be ample,100 sq ft for 4 Wyandottes. They have become noisier, unruly & more aggressive toward each other. They try to push their way out whenever the gate is opened & spend much of their time checking the fencing for weaknesses. In trying to give these gals a break I fear we've created 4 unruly monsters. Has anyone else found this to be true?

 

Thanks! Can't have these girls becoming loud & obnoxious every time they don't get to romp in the garden. They're only getting to go in there for cleanup detail, it won't be an every day occurrence. I may have to rethink this.