Contribution of the distance to coast on the distribution model, rat-free model and rat-invaded model for red-footed booby (RFT), brown noddy (BN), white tern (WT), and wedge-tailed shearwater (WTS). Contribution of distance to a near rat-free island were greater in red-footed booby and brown noddy. White tern showed that rat-invaded island has a greater contribution. Wedge-tailed shearwater showed difference in contribution between rat-free and rat-invaded island but the contribution of distance to coast in the distribution model was greater.