Overview

Distribution

Range

New Zealand.

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Ecology

Habitat

Habitat and Ecology

Systems
  • Terrestrial
  • Freshwater
  • Marine
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Source: IUCN

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Aythya novaeseelandiae

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 2
Species With Barcodes: 1
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Source: Barcode of Life Data Systems (BOLD)

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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2012

Assessor/s
BirdLife International

Reviewer/s
Butchart, S. & Symes, A.

Contributor/s

Justification
This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be increasing, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size may be small, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
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Source: IUCN

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Population

Population
The population is estimated to number 5,000-10,000 individuals, roughly equating to 3,300-6,700 mature individuals.

Population Trend
Increasing
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Wikipedia

New Zealand scaup

The New Zealand scaup (Aythya novaeseelandiae) commonly known as a black teal, is a diving duck species of the genus Aythya. It is endemic to New Zealand. In Maori commonly known as papango, also matapouri, titiporangi, raipo.[2]

Description[edit]

Overall dark brown/black colours. The male has a striking yellow eye and a dark coloured (greenish) head. The female is similar to the male, but without the yellow eye and has a white face patch during breeding season. A white wing bar can be seen in both sexes when in flight.[3]

Feeding[edit]

They are a diving duck and may stay down for twenty to thirty seconds and go down three metres to look for aquatic plants, small fish, water snails, mussels and insects.[4][5] It is sometimes seen with the Australian coot (Fulica atra); it is thought that the scaup takes advantage of the food stirred up by the coots as they fossick for shrimps.[5]

Female

Distribution[edit]

Found throughout both North and South islands of New Zealand in deep freshwater lakes and ponds.[3] Unlike other members of this genus this scaup is not migratory, although it does move to open water from high country lakes if they become frozen in winter.[5]

Life cycle[edit]

They nest from October to March. They lay five to eight cream/white eggs in a nest close to water, often under banks or thick cover. The nest is usually lined with grass and down.[3] The eggs are incubated for four weeks by the female. The newly hatched duckling take to diving for food on their first outing.[5]

References[edit]

  1. ^ BirdLife International (2012). "Aythya novaeseelandiae". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013. 
  2. ^ Moncrieff, Perrine (1961). New Zealand Birds and How to Identify Them. Whitcombe and Tombs Ltd. p. 113. 
  3. ^ a b c Marshall, Janet; F.C. Kinsky, C.J.R. Robertson (1972). Common Birds in New Zealand. A.H. & A.W. Reed. p. 31. ISBN 0-589-00730-0. 
  4. ^ Orbell, Margaret (2003). Birds of Aotearoa. Reed Publishing NZ Ltd. p. 129. ISBN 0-7900-0909-9. 
  5. ^ a b c d Lockley, Ronald M. (1980). New Zealand Endangered Species. Cassell NZ. p. 82. ISBN 0-908572-22-0. 


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