We have rotated the sheep through the so called power line pasture -- additional free pasture land that because of the power line we must keep free of brush and trees; or in other words and from a shepard's perspective... looking like a pasture. The area was actually quite overgrown and the sheep had a ball... or a leaf or too! They would get quite excited every time they were about to enter a new paddock, baaing away and making a lot of baaa noise.
In any case the photos below really do show what i mean and how much they loved it!
Overgrown Pasture At Start of Rotation
Overgrown (well Formerly Overgrown) Pasture about 36 Hours Later
Overgrown (well Formerly Overgrown) Pasture about 36 Hours Later