A population survey of the endangered White-headed Duck Oxyura leucocephala in Kazakhstan shows an apparently increasing Eastern population. Issue 1 (2nd January 2019)
- Record Type:
- Journal Article
- Title:
- A population survey of the endangered White-headed Duck Oxyura leucocephala in Kazakhstan shows an apparently increasing Eastern population. Issue 1 (2nd January 2019)
- Main Title:
- A population survey of the endangered White-headed Duck Oxyura leucocephala in Kazakhstan shows an apparently increasing Eastern population
- Authors:
- Koshkina, Alyona I.
Koshkin, Alexey V.
Timoshenko, Alexey Y.
Koshkin, Artyom A.
Schielzeth, Holger - Abstract:
- ABSTRACT: Capsule: Surveys of the White-headed Duck Oxyura leucocephala at key breeding and staging sites in Kazakhstan suggest a positive trend for the migratory Eastern population and an underestimation of the global population. Aims: To review and update the population estimate and distribution status of the White-headed Duck in Kazakhstan using the most recent survey data. Methods: Distribution and population estimates were derived from a compilation of all published and unpublished data and a series of targeted surveys in 2013–17, covering breeding, post-breeding and migration periods at key sites in north-central Kazakhstan. Results: Numbers of White-headed Ducks were particularly high in the post-breeding and autumn migration period. There was a positive population trend across the past two decades, including high counts in 2016 and 2017, with more than 20 000 and about 7500 individuals, respectively, suggesting a population increase. Breeding records were scattered and overall low in numbers, but likely partly overlooked. Conclusion: The global population size of the White-headed Duck is currently considerably underestimated. The positive trend reflects the overall improvement in the status of the Eastern population. However, aggregation at relatively few sites represent a potential conservation concern. The breeding sites that are a source for the migratory aggregations in north-central Kazakhstan are still to be discovered.
- Is Part Of:
- Bird study. Volume 66:Issue 1(2019)
- Journal:
- Bird study
- Issue:
- Volume 66:Issue 1(2019)
- Issue Display:
- Volume 66, Issue 1 (2019)
- Year:
- 2019
- Volume:
- 66
- Issue:
- 1
- Issue Sort Value:
- 2019-0066-0001-0000
- Page Start:
- 111
- Page End:
- 120
- Publication Date:
- 2019-01-02
- Subjects:
- Wetland conservation -- waterbird migration -- Central Asia -- population trends -- white-headed Duck
Birds -- Ecology -- Great Britain -- Periodicals
Birds -- Conservation -- Great Britain -- Periodicals
Birds -- Ecology -- Periodicals
Birds -- Conservation -- Periodicals
Birds -- Great Britain -- Periodicals
Birds -- Geographical distribution -- Periodicals
Birds -- Counting -- Periodicals
598.170941 - Journal URLs:
- http://www.tandfonline.com/loi/tbis20#.UrShPk2IqmQ ↗
http://www.ingenta.com/journals/browse/bto/bird ↗
http://www.tandfonline.com/ ↗ - DOI:
- 10.1080/00063657.2019.1618239 ↗
- Languages:
- English
- ISSNs:
- 0006-3657
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 10846.xml