Movements and Migration

The Bridled White-eye has not been recorded moving among islands historically, although it is possible that individuals are blown between such nearby islands as Saipan, Tinian, and Aguiguan during typhoons. Clearly, in the past, the species had dispersed among the islands of Saipan, Tinian, and Aguiguan, and in the more distant past, dispersal occurred either to or from Guam.

During a study of flocking behavior, banded birds remained in the study area of 600 m diameter for up to 14.5 months, although at least some individuals appeared to range beyond this distance during foraging activities. Small groups of at least three birds were family groups, although larger groups of ~50 birds also foraged together and then dispersed into smaller flocks (52 Craig, R. J. (2002). Aspects of flocking behavior in an endemic Pacific island white-eye. Journal of Field Ornithology 73(1):70–73. Close ).