The Guam rail is a flightless bird found on the island of Guam. It builds a shallow nest on the ground and lays eggs throughout the year. There
are no native species of snakes on Guam, so the Guam rail had no
experience with snake predators until the brown tree snake was
accidentally introduced sometime between 1944 and 1952. These
snakes, which eat a wide variety of animal species, quickly established
a large population on Guam.
How was the Guam rail most likely affected by the introduction of the
brown tree snake?