DOWDING, John. Conservation assessment of the Variable Oystercatcher Haematopus unicolor [online]. Ecology and conservation of New Zealand shorebirds, 2014-01-01 [cit. 2022-05-17]. Dostupné online. (anglicky)
doc.govt.nz
Variable oystercatcher/tōrea. www.doc.govt.nz [online]. Department of Conversatoin [cit. 2022-05-18]. Dostupné online. (anglicky)
doi.org
dx.doi.org
BANKS, Jonathan C.; PATERSON, Adrian M. A preliminary study of the genetic differences in New Zealand oystercatcher species. New Zealand Journal of Zoology. 2007-01-01, roč. 34, čís. 2, s. 141–144. ISSN0301-4223. DOI10.1080/03014220709510072. (anglicky)
PRESSWELL, B.; MELVILLE, D. S.; RANDHAWA, H. S. Tapeworm bolus expelled from New Zealand variable oystercatchers (Haematopus unicolor) during handling: first record of this phenomenon in wild birds, and a global checklist of Haematopus cestode parasites. Parasitology Research. 2012-12-01, roč. 111, čís. 6, s. 2455–2460. Dostupné online [cit. 2022-05-18]. ISSN1432-1955. DOI10.1007/s00436-012-2992-9. (anglicky)
doi.org
PRESSWELL, B.; MELVILLE, D. S.; RANDHAWA, H. S. Tapeworm bolus expelled from New Zealand variable oystercatchers (Haematopus unicolor) during handling: first record of this phenomenon in wild birds, and a global checklist of Haematopus cestode parasites. Parasitology Research. 2012-12-01, roč. 111, čís. 6, s. 2455–2460. Dostupné online [cit. 2022-05-18]. ISSN1432-1955. DOI10.1007/s00436-012-2992-9. (anglicky)
iucnredlist.org
apiv3.iucnredlist.org
The IUCN Red List of Threatened Species 2021.3. 9. prosince 2021. Dostupné online. [cit. 2021-12-27].
nzbirdsonline.org.nz
WATOLA, George. The discovery of New Zealand's birds : the first record of every bird species in New Zealand since 1769. Orewa: Stepping Stone Books, 2009. Dostupné online. ISBN9780473135409. S. 129–130. (anglicky)
DOWDING, J. E. Variable oystercatcher [online]. New Zealand Birds Online, 2013 [cit. 2022-05-10]. Dostupné online. (anglicky)
worldcat.org
BANKS, Jonathan C.; PATERSON, Adrian M. A preliminary study of the genetic differences in New Zealand oystercatcher species. New Zealand Journal of Zoology. 2007-01-01, roč. 34, čís. 2, s. 141–144. ISSN0301-4223. DOI10.1080/03014220709510072. (anglicky)
PRESSWELL, B.; MELVILLE, D. S.; RANDHAWA, H. S. Tapeworm bolus expelled from New Zealand variable oystercatchers (Haematopus unicolor) during handling: first record of this phenomenon in wild birds, and a global checklist of Haematopus cestode parasites. Parasitology Research. 2012-12-01, roč. 111, čís. 6, s. 2455–2460. Dostupné online [cit. 2022-05-18]. ISSN1432-1955. DOI10.1007/s00436-012-2992-9. (anglicky)