Notornis, 50 (1), 54-56
Article Type: short note
Notornis, 50 (1), 54-56
Article Type: short note
Southern Bird, 16 (Dec), 11-11
Article Type: Article
Southern Bird, 14 (Jun), 9-9
Article Type: Article
Notornis, 50 (3), 161-168
Article Type: Paper
Southern Bird, 16 (Dec), 3-3
Article Type: Article
Southern Bird, 13 (Mar), 4-4
Article Type: Article
Notornis, 50 (2), 103-112
Article Type: Paper
Southern Bird, 15 (Sep), 7-7
Article Type: Article
Notornis, 50 (4), 231-233
Article Type: short note
Notornis, 50 (1), 36-42
Article Type:
Southern Bird, 14 (Jun), 10-11
Article Type: article
Notornis, 50 (3), 148-154
Article Type: paper
Recent estimates of the number of yellow-eyed penguin (Megadyptes antipodes) throughout its range have led to a revised figure for the total population of this species. The number of breeding pairs on Stewart and Codfish Is together with the Auckland Is remain the least well known. Ground searches in 1984 -1994 on Stewart and Codfish Is suggested fewer birds than expected. The results of 102 ground searches of 61 localities and 118 beach counts (>700 h of observations) support a lowering of earlier estimates to c. 170-320 pairs on Stewart Is and its outliers, and 50-80 breeding pairs on Codfish Is, giving a total of 220-400 pairs for this region. The relatively few breeding pairs found on Stewart Is, based on the length of coastline and hinterland area available, together with the small groupings, suggest that predation of adults and chicks may be a factor in the relatively low numbers of this species on Stewart Is itself.
Southern Bird, 15 (Sep), 12-12
Article Type: Article
Notornis, 50 (2), 113-114
Article Type: paper
Southern Bird, 15 (Sep), 4-4
Article Type: Article
Notornis, 50 (4), 233-235
Article Type: short note
Notornis, 50 (1), 23-26
Article Type: paper
Abstract Moutohora (Whale Island) holds the largest surveyed breeding colony of grey-faced petrels (Pterodroma macroptera gouldi). For our estimate of the breeding population, we divided the island into 16 sections within which burrow densities were approximately uniform; the surface areas of these sections were found by planimetry. Apparently completed burrows were counted in 1998-2000 within each section by plots of 2 m radius along linear transects, or by 10 X 10 m contiguous plots. The total estimate (± SE) for the island was 109,000 * 10,000 burrows, which equates to about 95,000 pairs breeding annually, given an occupancy rate of about 87%. The population has apparently more than doubled since Norway rats (Rattus norvegicus) and rabbits (Oyctolagus cuniculus) were eradicated in 1985/87.
Southern Bird, 16 (Dec), 10-10
Article Type: Article
Southern Bird, 14 (Jun), 3-4
Article Type: Article
Notornis, 50 (3), 155-160
Article Type: paper
Hunters of the endemic imperial pigeon (Ducula goliath) or notou in the Foret Plate site, New Caledonia, in Apr 2001 and Mar 2002, allowed us to collect some biological material, measurements and descriptions from 63 pigeons. The sample included 5 immature imperial pigeons, and 58 adults. Several measurements of adult birds differed significantly between the sexes: weight, body length, wing length, tail length, tarsus length, and head length and width being greater in males (n = 28) than females (n = 30). A cross-validated classification using a discriminant function analysis on these variables allowed 74 % of the birds to be correctly classified as male or female. None of We qualitative characters (colour of skin, bill, iris, feet, feathers) was different between the sexes. Sexing birds using a bio-molecular analysis proved to be 100% reliable. The small gonads and the thin wall of the midgut indicated that the notou were not breeding at the time of collection. They had completed, or almost so, their wing moult. Fruits of 22 tree species and the leaves of trees and ferns were identified in material taken from digestive tracts. No internal parasites and few external parasites – of a low pathogenicity – were recorded. These results improve lmowledge of this endemic species and should be useful in this popular game bird’s conservation and management.