The distribution of the blue duck, Hymenolaimus malacorhynchos, in the South Island: a preliminary study

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dc.contributor.authorFordyce, R. E.
dc.date.accessioned2020-06-11T02:24:35Z
dc.date.available2020-06-11T02:24:35Z
dc.date.issued1973en
dc.description.abstractThe past and present distribution of the blue duck, Hymenolaimus malacorhynchos, in the South Island, is briefly reviewed. The data presented here indicate that the blue duck is widely distributed throughout the mountainous areas of the Island. It is suggested that since early European times there has been a gradual disappearance of ducks from the lower reaches and gorges of many rivers, especially in more developed agricultural areas. Several possible causes of this decline are discussed. Man appears to have been the cause of the restriction in distribution by changing physical parameters of the environment, and by predation.en
dc.identifier.issn0113 - 7492
dc.identifier.urihttps://hdl.handle.net/10092/100222
dc.identifier.urihttp://dx.doi.org/10.26021/522
dc.language.isoen
dc.publisherNew Zealand Natural Sciencesen
dc.publisherMauri Oraen
dc.relation.ispartofseriesVol. 1;
dc.rightsCC-BY 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleThe distribution of the blue duck, Hymenolaimus malacorhynchos, in the South Island: a preliminary studyen
dc.typeJournal Articleen
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