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UK top twitchers

Southern Bird, 6 (Jun), 7-7

M. McCarthy (2001)

Article Type: article

Breeding, survival, and recruitment of Chatham Island pigeon (Hemiphaga chathamensis)

Notornis, 48 (4), 197-206

I.A. Flux; R.G. Powlesland; P.J. Dilks; A.D. Grant (2001)

Article Type: Paper

The Chatham Island pigeon or parea (Hemiphaga chathamensis) is an endangered species of pigeon endemic to the Chatham Islands. Effective conservation management of the Chatham Island pigeon required an understanding of its ecology and identification of the causes of decline. We studied the pigeon in their last remaining stronghold; the south-west of Chatham Island, New Zealand, between July 1991 and December 1994. We describe the nesting behaviour, nesting success, and the dispersal, survival, and recruitment of juveniles. The study was confounded by the lack of information on predator numbers or outcomes of pigeon nests from before the start of predator control activities within and adjacent to our study area. Despite a previously reported decline in pigeon numbers up until the early 1990s, during this study there was a 3-fold population increase, and only a low level of predation by possums and rats. Other than predation, no factor which might previously have limited the pigeon population was identified. We assume that the trapping and poisoning of pest-mammals since 1989, has been sufficient to allow the population of Chatham Island pigeon to recover.

Decline of brown teal (Anas chlorotis) in Northland, New Zealand, 1988-99

Notornis, 48 (3), 131-136

R. Parrish; M. Williams (2001)

Article Type: Paper

Numbers of brown teal (Anas chlorotis) present at summer flock sites in Northland, New Zealand declined 65% during 1988-99 and the species’ principal range contracted to three enclaves located along 20 km of the eastern coast. Most populations underwent a period of gradual decline followed by an abrupt crash, symptomatic of prolonged recruitment failure. Drought-induced habitat and landscape change is proposed as an important agent of decline in two formerly large populations at Clendon Cove and Tutaematai. Extirpation in Northland appears imminent.

Ruapehu Kiwi

Southern Bird, 3 (Sep), 4-4

K. Oates (2000)

Article Type: article

Failed establishment of North Island weka (Gallirallus australis greyi) at Karangahake Gorge, North Island, New Zealand

Notornis, 47 (2), 90-96

A.J. Beauchamp; G.C. Staples; E.O. Staples; A. Graeme; B. Graeme; E. Fox (2000)

Article Type: Paper

A captive-breeding programme was begun in August 1991 to breed North Island weka (Gallirallus australis greyi) for release at a North Island site. A total of 101 weka were released between October 1992 and January 1996 at Karangahake Gorge, southern Coromandel. The project was abandoned in March 1996 after dogs and ferrets (Mustela furo) killed many of the birds.

Queen’s Birthday Honours, June 2000

Notornis, 47 (4), 237-240

Anonymous (2000)

Article Type: Article

Rhys Philip Buckingham (MNZM) Member of the New Zealand Order of Merit, For Services to Ecology. David Edgar Crockett Companion of the Queen’s Service Order, For Public Services.

Foraging behaviour and diet of a reintroduced population of the South Island saddleback (Philesturnus carunculatus carunculatus)

Notornis, 47 (1), 7-12

J.P. Pierre (2000)

Article Type: Paper

The South Island saddleback (Philesturnus carunculatus carunculatus) is one of two subspecies of the New Zealand saddleback. Despite the endangered status of this subspecies, it was not studied in detail until 1994, when 26 birds were released onto Motuara Island in the Marlborough Sounds of New Zealand. I report the foraging behaviour and diet of this reintroduced population during the first breeding season after release. South Island saddlebacks used their bills in a variety of ways when foraging, and were predominantly insectivorous. They obtained most food from the ground and five-finger (Pseudopanax arboreus), and the number of prey captured generally reflected the amount of time saddlebacks spent on foraging substrates. North and South Island saddlebacks are very similar in terms of foraging behaviour, prey handling techniques and types of invertebrate prey consumed. The foraging patterns and diet of South Island saddlebacks on Motuara Island differed from all potential competitors. I conclude that the success of the South Island saddleback transfer to Motuara Island should not be threatened by a lack of food or foraging opportunities.

Student theses

Southern Bird, 3 (Sep), 9-11

E. Young (2000)

Article Type: article

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