
In New Mexico’s Carlsbad Cavern, hundreds of thousands of Brazilian free-tailed bats spiral out each summer evening and eat about three tons of insects, mostly moths and beetles, while Texas colonies intercept corn earworm moths above cotton country
Every summer evening, hundreds of thousands of Brazilian free-tailed bats spiral out of Carlsbad Cavern and climb thousands of feet into the desert sky to intercept corn earworm moths bound for cotton and sorghum fields across the southern Plains — a functioning pest-control system that saves farmers hundreds of thousands of dollars a year.














