Sixteen Osprey Pandion haliaetus nests were found during the 2002 breeding season in eastern Kagawa Prefecture (34°15-24′N, 134°5-17′E), Shikoku, Japan. Fourteen nests were situated on or near the tops of dead or alive pine trees Pinus spp, and two on the flat tops of radio towers. Thirteen of them were found within a small (4.5×2.5 km) hilly area.