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WatchList Species
Account for Maui Parrotbill (Pseudonestor xanthophrys)
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| Photo: Eric VanderWerf |
The Maui Parrotbill, with an estimated
total population of 500 individuals, is found only in the
remote high-elevation rain forests on the north slopes of
eastern Maui, where it is resident above 1,200 m in native
montane forest dominated by ‘ohi’a. It is not
present in adjacent areas dominated by exotic trees. Its present
range, which covers only about 50 km2, is probably marginal
as is in an area of heavy rainfall, leading to drastic losses
during the breeding season. The first nest was not discovered
until 1993 and natural history studies of the species began
only in the 1980s. It uses its relatively large, parrot-like
bill to pluck and bite open fruit and to lift bark and lichens
and rip open branches and stems in search of invertebrates.
Since the chicks remain dependent on the parents for 5 months
or longer, it is oftne sighted in family groups.
Potential threats are predation by rats,
cats, and the introduced Barn Owl, but little information
is available on this topic. In addition, disease, habitat
degradation by introduced pigs, and competition from introduced
bird species are threats to the bird. Low-flying helicopters
from tour companies and for transporting researchers may disturb
the birds, particularly during nesting. The bird’s habitat
is on National Park lands, state lands, and a preserve owned
by The Nature Conservancy. Among the management practices
used by all three are controlling alien plants and fencing
for control and exclusion of large feral mammals. The bird
is on the endangered species list and is classified by BirdLife
International as critical.
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