Kangaroo Island Glossy Black-Cockatoo Foraged Sheoak Data, 2023 – 2024

This study aimed to investigate whether the reduction in food supply following the Kangaroo Island 2019 – 20 Black Summer fires would result in Glossy Black Cockatoos foraging less selectively on Allocasuarina verticillata (drooping Sheoak) food trees within those patches, i.e. at higher foraging rates. We investigated whether foraging intensity (i.e., the proportion of foraged trees relative to total number of examined female trees) in regions on Kangaroo Island impacted by the fires differed from that in unburnt areas, and whether that had resulted in GBCs feeding on cones with lower food profitability in burnt regions.

本研究旨在探究2019-2020年袋鼠岛黑色夏季山火引发的食物供给减少，是否会导致辉凤头鹦鹉（Glossy Black Cockatoos，后文简称GBCs）在受影响斑块内对垂枝木麻黄（Allocasuarina verticillata，drooping Sheoak）取食树木的选择偏好降低，即表现为更高的取食率。本研究对比了袋鼠岛受山火影响区域与未过火区域的取食强度（即被取食树木占已调查雌性树木总数的比例）的差异，并探究了受火区域内GBCs是否取食了食物收益更低的球果。