Abstract
(1) The winter pattern of ecological differences between adults and juveniles was examined in the population of silvereyes (Zosterops lateralis chlorocephala) on Heron Island, Australian Great Barrier Reef. (2) Adults were more likely than juveniles to survive over winter. (3) Adults and juveniles tended to segregate into different habitats. The adults were more likely than juveniles to use the preferred breeding habitat (Pisonia forest) in winter. (4) Adults ranged over smaller areas than did juveniles, and were less likely to join foraging flocks. (5) Adults were socially dominant to juveniles, and were more discriminating in their defence of fig trees and figs, which were common in the clearings and edges of the Pisonia forest.
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