Restore the habitats of the endangered Tuamotu Sandpiper (Prosobonia cancellata), which now occurs only on four atolls due to introduced rats, by removing these invasive rats from two nearby islets to improve the number of endangered birds. On the islet of Tiromi in Tahanea Atoll, approximately 35 pairs breed on tiny territories, plus additional birds which we believe would breed if territory space were available.