Native Species

The Status of Cook Islands Birds -1996

The Status of Cook Islands Birds -1996

Gerald McCormack, CINHT

The Cook Islands is fifteen small islands (total land area 240km²), scattered over an area approaching the size of Western Europe, in the tropical South Pacific. Although the 18,000 residents, almost all Polynesian, carry New Zealand passports, the country has been internally self-governing since 1965, and is independently responsible for all environment matters.

Two divisions of Government are specifically concerned with the environment: (1) the Environmental Service (formerly the Conservation Service) implements the environment act, with a special emphasis on Environmental Impact Assessment; and (2) the Natural Heritage Project undertakes research, and prepares publications, to integrate traditional and scientific knowledge on all aspects of the environment. The latter project, formalised in 1990 by the Prime Minister, Sir Geoffery Henry KBE, is unique in the South Pacific.

The limited availability of specialist staff, and of financial resources, has meant that overseas volunteers and funding have been of fundamental importance in monitoring and maintaining the inherently fragile terrestrial and coral-reef ecosystems. Land is under family-inherited ownership and, although it cannot be sold, a small amount is leased to the Government and to non-family people.

The fifteen islands divide socially and physically into a Northern Group of six islands and a Southern Group of nine islands. The five atolls and one sand-cay of the Northern Group, support extensive Coconut Palm plantations for a fickle copra industry. The only resident landbird is the Pacific Pigeon (Rupe, Ducula pacifica), which lives on three atolls, feeding mainly on the fruits of the indigenous Beach Gardenia(Ano, Guettarda speciosa).

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Posted by Gerald in Animals, Birds, 0 comments
Life in the Karekare Bee Hotel

Life in the Karekare Bee Hotel

Gerald McCormack, CINHT

Karekare Bee Hotel at 6pm on 28th December 2021 with suites numbered left to right

We built a small hotel to study the behaviour of the local Leaf-cutter Bee, which usually nests around March or April. The hotel had three 12mm holes about 50mm long drilled to overlap two blocks of wood so that separating them would open the holes for inspection. As a hotel, each hole is a suite and any occupying bee or wasp makes its own rooms by building partitions or doors. Within a suite, Room 1 is the first to be partitioned and will contain the oldest offspring.

Early morning on the 28th December 2021 it was unexpectedly noticed that a large Tahitian Mason Wasp had already sealed Suite 2 with mud and was starting work on Suite 3, which she sealed in the early evening.  Suite 1 remained vacant. Twelve days later, on the 9th January the hotel was opened for inspection. Continue reading →

Posted by Gerald in Animals, Biodiversity, Terrestrial, 0 comments
Tree-ferns – Our Living Fossils

Tree-ferns – Our Living Fossils

Joseph Brider, Natural Heritage Trust.
First published online (16 Feb 2021).

Tree-fern

Budding Tree-fern (Cyathea decurrens). Photo: CINHT

Scattered throughout the Rarotonga inland forest are our Tree-ferns, known locally as Panga. These plants are not trees, they are ferns which have evolved a trunk-like stem to lift their leaves up off the forest floor in order to seek life-sustaining sunlight.
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Posted by Joseph in Ecology, Plants, Terrestrial, 0 comments