Something I read today from http://www.attra.org/attra-pub/poultryoverview2.html:
Fire ants on pasture can be a concern in the South, especially for field pens. However, one producer actually used layers to control the problem: "We put a cage of our Rhode Island Reds on our mounds and they dig them out and eat them with great gusto. The next day we move our cages and there's a hole where the ants used to be and they've never returned".(40) ATTRA has a publication on Sustainable Fire Ant Control.
(taken from: http://www.attra.org/attra-pub/poultryoverview2.html)
(taken from: http://www.attra.org/attra-pub/poultryoverview2.html)