He's at that in between stage for border collies - not old enough for training but desperately looking for something to occupy his border collie mind.
It leads to him doing things he probably shouldn't do.
At first he just wanted to put the sheep on the fence and hold them there,
But with some gentle coaxing, he finally agreed to go around them.
So now what?
More of the same.
and some growing up with no pressure.
But now he's got something to do.
(thanks to Amanda Labadie for the pictures!)