Authorities in Ecuador Trying to Rid Galapagos Islands of Rats - kcentv.com - KCEN HD - Waco, Temple, and Killeen

(KCEN) -- In another part of the world, authorities in Ecuador have started phase two of an aerial assault they hope will wipe out millions of black rats who've invaded the Galapagos Islands.

The operation began earlier this month when nearly 22 tons of poison bait were dropped from a helicopter.

The goal is to kill off the non-native rodents that feed on the eggs and hatchlings of the islands' native species like tortoises, snakes and lizards.

Rats have also depleted the plants those species need for food.

The rats, who were introduced to the islands by whalers in Buccaneers, are now so numerous there is one rat per square foot.