Publications Archive - Page 56 of 278

Bird distribution atlas 1999-2004: August 2003 update

Southern Bird, 15 (Sep), 5-5

C.J.R. Robertson (2003)

Article Type: article

Population estimate for northern giant petrels (Macronectes halli) on Antipodes Island, New Zealand

Notornis, 50 (3), 128-132

A. Wiltshire; S. Hamilton (2003)

Article Type: Paper

Northern giant petrel (Macronectes halli) populations are thought to be increasing at some locations around the world, decreasing at others. The size and status of their breeding populations within the New Zealand region, in particular, is poorly understood: reliable population estimates have never been made at 3 of the 5 breeding locations. A survey of pre-fledging northern giant petrel chicks on Antipodes Island, New Zealand during Jan 2000 yielded a count of 130. The total population was estimated to be c. 230 breeding pairs. Because of an absence of accurate historical surveys, the status of the Antipodes Is population is unknown.

New Zealand pigeon (kereru; Hemiphaga novaeseelandiae) crossing Foveaux Strait

Notornis, 50 (3), 174-175

G.A. Harper (2003)

Article Type: Short Note

How to see almost 100 species in 24 hours

Southern Bird, 16 (Dec), 11-11

H. Robertson (2003)

Article Type: Article

Financial Report for 2002

Southern Bird, 14 (Jun), 5-7

J.M. Limited (2003)

Article Type: Article

Starlings (Sturnus vulgaris) making their own nest sites

Notornis, 50 (4), 238-240

J.E.C. Flux (2003)

Article Type: Short Note

Home range size and carrying capacity of the South Island takahe (Porphyrio hochstetteri) on Tiritiri Matangi Island

Notornis, 50 (2), 67-74

M.J. Baber; J.L. Craig (2003)

Article Type: Paper

The South Island takahe (Porphyrio hochstetteri), an endangered flightless rail, has been released on 4 predator-free islands to reduce the risk of its extinction. To determine the ability of these islands to support takahe populations, we studied takahe home range size and carrying capacity on one of the islands. We plotted the location of 4 takahe family groups (13 individuals) from Nov 1994 to Oct 1995 on Tiritiri Matangi Island. Mean home range size (95% Minimum Convex Polygon) was 20.7 ha, and tended to be smaller when the proportion of suitable habitat within each home range was higher. We estimate that Tiritiri Matangi can support up to 8 breeding pairs, based on the availability of suitable habitat and estimated individual habitat requirements. However, this number is likely to change in the future depending on the influence of population density increases and successional habitat changes on takahe spatial requirements.