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Time energy budget of the New Holland honeyeater Phylidonyris novaehollandiae (Aves: Meliphagidae) near Hobart, Tasmania


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Kusuma Yuni, Dra. Luh Putu Eswaryanti 2003 , 'Time energy budget of the New Holland honeyeater Phylidonyris novaehollandiae (Aves: Meliphagidae) near Hobart, Tasmania', Unspecified thesis, University of Tasmania.

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The New Holland honeyeater Phylidonyris novaehollandiae is a member of
the family Meliphagidae, which is one of Australia's dominant passerine families
(Ford and Paton, 1977). Many siu-dies have been conducted on this species in
mainland Australia (e.g. Paton, 1981; 1982; McFarland, 1986) but there is much less
data from Tasmania. This study was conducted near Hobart, Tasmania (S 42° 54'
10", E 147° 19' 26", average 50 m a.s.1). The site consisted of two adjacent habitats,
one was dry sclerophyll forest and the other, a modified man-made habitat.
The first stage of this study was the determination of time budgets. The
activities of the New Holland honeyeater were found to be significantly different
both seasonally and diurnally. The time proportion for foraging exceeded the time
proportion for other activities throughout the year. The study also found that the
major diet of this bird was nectar in all seasons of the year, while other non-nectar
carbohydrate sources such as manna, lerp or honeydew were found to be less
important in this study. The bird also spent a small proportion of their foraging time
to feed on insects to satisfy their protein requiremeni's.
. During the study on time budget activity, observations on various aspects of
the breeding of the New Holland honeyeater were also conducted. The birds in this
study had a lengthy breeding season from early winter to mid-summer. The birds
were multi-brooded and the mean clutch 'size was 2.14 ±. 'S .E 0.13. The parental roles
and nesting activity observed were similar to the earlier studies in mainland
The second stage involved measurement of the basal metabolic rate. This was
found to be higher (5.12 ± 0.14 ml g-1hr-1 ) than in the same species from mainland
Australia probably because the colder climate in Tasmania is more energetically
demanding, therefore the birds enhance their thermogenesis with an increased basal
metabolic rate. The basal metabolic rate did not vary seasonally perhaps because the
birds reside in a temperate climate and are prepared for the stress of changing seasons by making physiological and behavioural adaptations that allow the birds to
survive throughout the year in Hobart, Tasmania.
The third section deals with the time energy budget of the New Holland
honeyeater. The time energy budget did not vary seasonally (153.95 -1- 4.5 in spring,
134.00 ± 7.5 in summer, 130.10 -± 10.7 in autumn and 123.00 1- 7.5 in winter) as the
bird balance the time and energy allocation for their activities in facing the varying
energy demands of their annual cycle.

Item Type: Thesis - Unspecified
Authors/Creators:Kusuma Yuni, Dra. Luh Putu Eswaryanti
Keywords: Honeyeaters
Copyright Holders: The Author
Additional Information:

Thesis (M.Sc.)--University of Tasmania, 2003. Includes bibliographical references

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