Home Range and Territoriality of Two Hawaiian Honeycreepers, the ‘ĀKohekohe and Maui Parrotbill
2001; Oxford University Press; Volume: 103; Issue: 4 Linguagem: Inglês
10.1650/0010-5422(2001)103[0746
ISSN1938-5129
AutoresThane K. Pratt, John C. Simon, Brian P. Farm, Kim E. Berlin, James R. Kowalsky,
Tópico(s)Plant and animal studies
ResumoAbstract 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 individ...
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