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Notornis, 2014, Vol. 61: 1-9
0029-4470 © The Ornithological Society of New Zealand Inc.
Received 9 April 2013; accepted 20 January 2014
*Correspondence: tgreene@doc.govt.nz
INTRODUCTION
The Kermadec Islands comprise a chain of widely
scaered active and extinct volcanic cones (or
remnants of them) emerging from the Kermadec
sub-oceanic ridge adjacent to the Tonga trench and
Le Havre Trough (Veitch et al. 2004; Gaskin 2011).
Macauley Island, the largest of the southern group,
was visited during the winters of 2002 and 2006
to count and assess the risk to the population of
Kermadec red-crowned parakeets (Cyanoramphus
novaezelandiae cyanurus) by a proposed Pacific rat
(Raus exulans) eradication programme (Greene et al.
2004). During these visits we also had the opportunity
and the means (a vessel equipped with a helicopter)
to visit other islands briefly within this group and
make notes on the status of the flora and fauna.
This paper records observations of birds
made during 2 winter visits in 2002 and 2006. The
publication of these winter observations is intended
Additional notes on the birds and vegetation of the southern Kermadec
Islands, 2002 and 2006
TERRY C. GREENE*
Science and Capability, Department of Conservation, Private Bag 4715, Christchurch 8140, New Zealand
R. PAUL SCOFIELD
Canterbury Museum, Rolleston Avenue, Christchurch, New Zealand
PETER J. DILKS
Science and Capability, Department of Conservation, Private Bag 4715, Christchurch 8140, New Zealand
RICHARD GRIFFITHS
Department of Conservation, PO Box 32026, Devonport, Auckland 0744, New Zealand
JOHN W. BARKLA
Department of Conservation, PO Box 5244, Dunedin 9058, New Zealand
Abstract Twenty five bird species were recorded following 2 brief winter visits to the southern Kermadec Islands during 2002
and 2006. Of these, 15 were seabirds and 10 land or shorebirds. Rapid changes in the dominant vegetation cover occurred
between 1988 and 2002. Ferns replaced grass and sedge swards over much of the island, and although this succession
was rapid, the distribution of woody species (the presumed historical dominant cover) did not change, most likely due to
limited seed sources, Pacific rat (Raus exulans) predation, and competition for space from other species. Possible impacts
of these changes on the avifaunal composition of Macauley Island are discussed. Following the presumed eradication of
Pacific rats from Macauley Island in 2006, recommendations are made for future vegetation and bird monitoring.
Greene, T.C.; Scofield, R.P.; Dilks, P.J.; Griffiths, R.; Barkla, J.W. 2014. Birds of the southern Kermadec Islands, 2002 and
2006. Notornis 61 (1): 1-9.
Keywords Kermadec Islands; birds; vegetation; eradication; restoration; succession; distribution