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Home range and territoriality of two Hawaiian honeycreepers, the 'A??kohekohe and Maui Parrotbill

Condor

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Abstract

Hawaiian honeycreepers have radiated into a diversity of trophic niches and patterns of space-use. We investigated space-use in two honeycreeper species, the 'A??kohekohe (Palmeria dolei), an endangered nectarivore, and Maui Parrotbill (Pseudonestor xanthophrys), an endangered wood excavator, by mapping the home ranges and dispersion of color-banded individuals at a study site in relatively undisturbed montane cloud forest on Maui Island, Hawai'i. With 20% of outlying points excluded, home-range size averaged much smaller for adult male 'A??kohekohe (0.56 ha) than for male Maul Parrotbill (2.26 ha). In both species, a female's home range mostly overlapped that of her mate. Adult male Maui Parrotbill defended year-round home ranges from which they excluded conspecifics except for their mates and dependent offspring. Although our data suggest that 'A??kohekohe also maintained all-purpose territories, the evidence is less convincing because these birds were seen feeding in the home ranges of other individuals. By defending all-purpose territories, these two species depart from the more common honeycreeper pattern of sharing large, undefended home ranges.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Home range and territoriality of two Hawaiian honeycreepers, the 'A??kohekohe and Maui Parrotbill
Series title:
Condor
Volume
103
Issue:
4
Year Published:
2001
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Condor
First page:
746
Last page:
755
Number of Pages:
10