OMG! I have never heard such a thing, Ace_king! What an awful way to start any day! I am so sorry. Although you surely have a longer row to hoe than I do with regard to ants, in Mid-TN I have had good luck controlling them around my pen with a solid perimeter ring of DE, as well as treating the dirt floor of the pen . . . and the coop shavings. I definitely noticed a difference last summer after I started doing this, as the ants had previously been attracted to the goodies I was leaving out for the girls (esp. the melon). Now I have hardly an ant around.
I know you will have to treat your area more intensively where the ants actually live, but the DE might help around the chix themselves. I have also had good luck in outer, non-chicken areas treating with a permethrin spray I got at the local co-op and mixed myself. It has a residual of about 3 weeks, shorter if we get lots of rain.
Best of luck, and again, sorry for an awful loss.
Jen in TN