Abstract
I observed the Japanese White-eye Zosterops japonica rob native Ipomoea indica flowers of their nectar in Okinawa Island, southern Japan. This observation suggests that Japanese White-eyes have long been conducting nectar robbing as a foraging method. Using serial photographs, I also described the nectar robbing behavior of Japanese White-eyes on flowers of the introduced I. cairica. I discovered I. indica flowers that were presumably damaged by Japanese White-eyes during 5 out of 8 survey-days. The maximum percentage of I. indica flowers that were damaged at any site was 41.18%, with an average of 6.19% per site (No. of flowers = 323). I also detected damaged flowers of I. cairica during 2 of 6 survey-days. The maximum percentage of damaged I. cairica at any site was 31.03%, with an average of 5.68% per site (No. of flowers = 264).
