Rat vs. Penguins in Chile

In this photo taken July 7, 2012, a recently born Humboldt penguin lies in a nest on Pajaro Nino Island, Chile. A rat invasion is threatening to tip Humboldt penguins toward extinction. Their eggs have become a favored rat dish, and rats also have been seen eating recently born penguin chicks when their parents were away. The International Union for the Conservation of Nature has had the penguins on its vulnerable list since 1988. (AP Photo/Eva Vergara)

In this June 29, 2012 a rat's nest is seen on the coast of Pajaro Nino Island, Chile. A rat invasion is threatening to tip Humboldt penguins toward extinction. Their eggs have become a favored rat dish, and rats also have been seen eating recently born penguin chicks when their parents were away. The International Union for the Conservation of Nature has had the penguins on its vulnerable list since 1988. (AP Photo/Paulina Arce)

In this photo taken April 2, 2012, a Humboldt penguin walks along the coast of Pajaro Nino Island, Chile. A rat invasion is threatening to tip Humboldt penguins toward extinction. Their eggs have become a favored rat dish, and rats also have been seen eating recently born penguin chicks when their parents were away. The International Union for the Conservation of Nature has had the penguins on its vulnerable list since 1988. (AP Photo/Paulina Arce)

In this photo taken April 2, 2012, a rat carcass lies on the coast of Pajaro Nino Island, Chile. A rat invasion is threatening to tip Humboldt penguins toward extinction. Their eggs have become a favored rat dish, and rats also have been seen eating recently born penguin chicks when their parents were away. The International Union for the Conservation of Nature has had the penguins on its vulnerable list since 1988. (AP Photo/Paulina Arce)