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== Външни препратки ==
* ''IUCN Red List: Oxyura leucocephala''[http://www.iucnredlist.org/details/143992/0#]
* ''BirdLife International'' [http://www.birdlife.org/datazone/species/index.html?action=SpcHTMDetails.asp&sid=3011&m=0#359]
* ''Action Plan for the White-headed Duck in Europe'' [http://ec.europa.eu/environment/nature/conservation/wildbirds/action_plans/docs/oxyura_leucocephala.pdf]
 
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