i got a dozen mix breed layers. they were about 8 weeks old when i put them under a light in their chicken coup/run. In the run, was a 2.5 foot high Thrasher ant hill. On a warm day, thousands would appear on the hill to sun themselves. My layers were still discovering their world when two of them wondered up to the top of the hill. I could tell the ants were mad, and i watch a couple crawl up one of their legs and bite the soft skin on its leg. the bird looked like it was going into shock! staggering and stumbling. Had it been a cartoon, it would have been funny but these were MY GIRLS! Now I was mad. The chicks were not eating them and they were showing a healthy sign of respect by keeping their distance.
two weeks passed. i treated with a safer boric acid powder and sugar concoction to try and kill. No luck and not quick enough. Ants still claiming their territory. Then, I backed off the feed a little and I'll be darn, they started getting even with ants. It took no more than 4 weeks but the girls won the war. The ant hill is no more, when they learned there were sweet morsels just under the surface, the hill did not stand a chance.