Home range and territoriality of two Hawaiian honeycreepers, the 'Akohekohe and Maui Parrotbill
- Thane K. Pratt , John C. Simon , Brian P. Farm , Kim E. Berlin , and James R. Kowalsky
Hawaiian honeycreepers have radiated into a diversity of trophic niches and patterns of space-use. We investigated space-use in two honeycreeper species, the ‘Ākohekohe (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 ‘Ākohekohe (0.56 ha) than for male Maui 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 ‘Ākohekohe 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:
- Publication Subtype:
- Journal Article
- Home range and territoriality of two Hawaiian honeycreepers, the 'Akohekohe and Maui Parrotbill
- Series title:
- Year Published:
- Cooper Ornithological Society
- 10 p.
- First page:
- Last page:
- Online Only (Y/N):
- Additional Online Files (Y/N):