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The orange-fronted parakeet (Cyanoramphus malherbi) is a colour morph of the yellow-crowned parakeet (C. auriceps)

Notornis, 33 (1), 17-22

R.H. Taylor; E.G. Heatherbell; E.M. Heatherbell (1986)

Article Type: Paper

Cyanoramphus malherbi (Souance 1857) is relegated to synonymy with C. auriceps (Kuhl 1820) after cross-breeding in captivity showed that both are colour morphs of one species. The resulting parent-offspring data can be most simply explained by the Mendelian theory of dominant/recessive inheritance at a single locus, the factor for yellow-crowned being dominant.

The relationship between riverbed flooding and non-breeding wrybills on northern feeding grounds in summer

Notornis, 32 (1), 42-50

K.F.D. Hughey (1985)

Article Type: Paper

I investigated the relationship between floods on the riverbed breeding grounds of wrybills (Anarhynchus frontalis) and the number of wrybills censused on northern harbours the following summer. For the purposes of the study I assumed that most birds oversummering on northern harbours are first-year non-breeders and that flood flows of the Rakaia River are representative of most other wrybill breeding rivers. A highly significant negative correlation (r2=0.69; p<0.01) existed for the 1968-1982 period. The study’s findings provide some support for the observation that by the early 1960s the wrybill population, after many years of growth, had begun to stabilise. Serious flooding in the 1982 and 1983 breeding seasons may have again destabilised the population structure.

Snipe in Southland

Notornis, 32 (4), 327-328

C.M. Miskelly; W.J. Cooper; K. Morrison; J.V. Morrison (1985)

Article Type: Short Note

Long-tailed skuas Stercorarius longicaudus in New Zealand

Notornis, 32 (1), 51-73

D.S. Melville (1985)

Article Type: Paper

A wreck of long-tailed skuas (Stercorarius longicaudus) on North Island beaches in early 1983 is reported. Characters used to identify long-tailed and Arctic skuas in the hand are reviewed with reference to New Zealand material. It is suggested that there may have been several New Zealand records of long-tailed skuas before the first accepted specimen record in 1964. The importance of retaining all small skuas found on New Zealand beaches for critical examination is emphasised. The 1983 wreck may be related to the 1982/83 El Nino, which apparently caused a reduction of food for at least some seabird species.

Distribution of yellowheads (Mohoua ochrocephala) in New Zealand

Notornis, 32 (4), 261-269

P.D. Gaze (1985)

Article Type: Paper

Historical records show that yellowheads (Mohoua ochrocephala) were once present in most forest habitats of the South Island and Stewart Island but they have become less widespread over the last 100 years. Disappearance from some areas was rapid at the end of the last century but yellowheads survived in other forests until quite recently. Reasons for this decline should be investigated in the hope that appropriate management may prevent this species from becoming endangered.

A ruff in Southland

Notornis, 32 (4), 329-330

C.M. Miskelly; W.J. Cooper (1985)

Article Type: Short Note

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