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1 December 2009 Prey Selection and Provisioning Rate of a Breeding Pair of Hodgson's Hawk-Eagles Nisaetus nipalensis
Hiroshi Kaneda
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Abstract

A breeding pair of Hodgson's Hawk-eagles Nisaetus nipalensis brought prey items of four vertebrate taxa with a mass range of 5–1900g to the nest. In the late breeding period, when both sexes performed provisioning, the male delivered birds and lighter items, whereas the female brought reptiles and heavier items, resulting in significant sexual prey partitioning regarding both taxa and mass. In the nestling stage, coinciding with the late breeding period, the male achieved a provisioning rate similar to that of the female, despite hunting bird prey, whose agility reduces their vulnerability, indicating the male's greater overall foraging ability.

© The Ornithological Society of Japan 2009
Hiroshi Kaneda "Prey Selection and Provisioning Rate of a Breeding Pair of Hodgson's Hawk-Eagles Nisaetus nipalensis," Ornithological Science 8(2), 151-156, (1 December 2009). https://doi.org/10.2326/osj.8.151
Received: 2 February 2009; Accepted: 6 September 2009; Published: 1 December 2009
KEYWORDS
foraging
Hodgson's Hawk-eagle
prey
Provisioning
Reversed sexual size dimorphism
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