I'm playing with Photobucket tonight.  Here's some happy cows in the corn. 

This is the same field, about 50 feet to the left, a day later.  They've been busy.  You can't see them, but there are 150 pairs in a 20 acre field.  After another couple of days you can see the back of the field, and after a couple more, it was bare down to the dirt.  This field is the biggest single piece of grazing they got.  After that it was only three days worth at a time.