Abstract
Four species of mammals and 42 species of birds were recorded on Kenbokki Island in 1999. No amphibians or reptiles were recorded during surveys of the island, and the island's isolation and the few habitats available there indicate that there is little possibility of either group inhabiting the island. Two small mammals, one shrew Sorex unguiculatus and one vole Clethrionomys rufocanus breed on the island. The seal Phoca vitulina occurs in the sea around the island, and Sika Deer Cervus nippon occasionally visit the island. The bird species proven to breed on Kenbokki Island are Leach's Storm-Petrel Oceanodroma leucorhoa, Japanese Cormorant Phalacrocorax capillatus, Latham's Snipe Gallinago hardwickii, Slaty-backed Gull Larus schistisagus, and Common Reed Bunting Emberiza schoeniclus. By far the commonest of these is O. leucorhoa, of which there are thought to be 20,000 pairs.
