Since the 1943 air raids, the garrison had been almost cut off from supplies and was reduced to the point of starvation. While the islands' sooty tern colony had received some protection as a source of eggs, the Wake Island rail was hunted to extinction by the starving soldiers. Ultimately about three-quarters of the Japanese garrison perished, and the rest survived only by eating tern eggs, the Pacific rats introduced by prehistoric voyagers, and what scant amount of vegetables they could grow in makeshift gardens among the coral rubble.