If you have been playing this game from it's inception, you would remember when we had no where to place our animals unless they were chickens or cows, and even then we were seriously limited. The animals were always on "Stay" and in rows. They look like Army troops on everyone's farm.
Today, Farmville has grown, putting into place Animal Buildings and some with several expansions available. Those have been great! Now, we finally have Duck Ponds that are functional and serve as homes for the many ducks we have received lately.