I am in need of some ideas for a movable run for our geese and ducks. They are a few weeks old and have eaten the grass to nothing in the run we have for them. I have been searching for ideas on a movable run so they have access to new lawn every day (maybe my husband won't have to mow the lawn near as much with a movable run too). Any suggestions are welcome. We have 8 geese and 15 ducks.