Publications Archive - Page 65 of 244

Wrybill census 2001

Southern Bird, 7 (Sep), 7-7

A. Riegen; J. Dowding (2001)

Article Type: Article

Status and breeding biology of the Chatham Island tomtit ( Petroica macrocephala chathamensis )

Notornis, 48 (4), 207-216

R.G. Powlesland; D.V. Merton; D. Crouchley; S. O'Connor (2001)

Article Type: paper

The population status of the Chatham Island tomtit (Petroica macrocephala chathamensis ) was determined for each island of the Chathams group, east of New Zealand. Also, the breeding biology of the population on Rangatira (South East Island), which is free of introduced mammalian pests, was determined from observations made during 8 breeding seasons, 1981/82 to 1988/89. The total population of the Chatham Island tomtit is estimated to be

Size and scope of the bird collections of New Zealand museums

Notornis, 48 (2), 108-110

B.J. Gill (2001)

Article Type: short note

Twenty years of moult recording

Southern Bird, 6 (Jun), 4-5

B. Bell (2001)

Article Type: article

Prion problems alleviated. An update on research toward the conservation of the endangered Chatham petrel ( Pterodroma axillaris )

Notornis, 48 (3), 183-183

K.J. Wilson; W. Sullivan; B. Ganglof (2001)

Article Type: Abstract

The occurrence of Wilson’s storm petrel ( Oceanites oceanicus ) in New Zealand waters

Notornis, 48 (1), 54-55

C. Petyt (2001)

Article Type: short note

Mangawhai census – November 2001

Southern Bird, 8 (Dec), 7-7

G. Pulham (2001)

Article Type: Article

Birds at Silktail Lodge

Southern Bird, 5 (Mar), 6-6

S. Chambers (2001)

Article Type: Article

Dive duration and some diving rhythms of the New Zealand king shag ( Leucocarbo carunculatus )

Notornis, 48 (3), 177-178

D. Brown (2001)

Article Type: short note

Magpie study

Southern Bird, 7 (Sep), 5-5

D. Morgan (2001)

Article Type: Article

A field technique for determining the sex of North Island kokako ( Callaeas cinerea wilsoni )

Notornis, 48 (4), 217-223

I. Flux; J. Innes (2001)

Article Type: paper

North Island kokako (Callaeas cinerea wilsoni) appear sexually monomorphic. Females are, on average, slightly smaller than males in most body measurements. Mean tarsus length was significantly smaller among females at all sites and can be used to predict sex of unknown birds with up to 86% accuracy. A simple discriminant function, using tarsus and wing chord measurements, was derived which increased sex resolution to over 90% at some sites. This is sufficient accuracy to provide a useful field technique for kokako research and conservation management. Best discri- minant functions for different sites are presented and their geographical limitations are discussed. Flux, I.; Innes, J. 2001. A field technique for determining the sex of North Island kokako (Callaeas cinerea wilsoni).