Weekes, P.J. (1982). "Checklist of helminth parasites of birds in New Zealand". New Zealand Journal of Zoology. 9 (4): 451–460. doi:10.1080/03014223.1982.10423876.
Presswell, B.; Melville, D.S.; Randhawa, H.S. (2012). "Tapeworm bolus expelled from New Zealand variable oystercatcher (Haematopus unicolor) during handling: first record of this phenomenon in wild birds, and a global checklist of Haematopus cestode parasites". Parasitology Research. 111 (6): 2455–2460. doi:10.1007/s00436-012-2992-9. PMID22752698. S2CID16270214.
Presswell, B.; Melville, D.S.; Randhawa, H.S. (2012). "Tapeworm bolus expelled from New Zealand variable oystercatcher (Haematopus unicolor) during handling: first record of this phenomenon in wild birds, and a global checklist of Haematopus cestode parasites". Parasitology Research. 111 (6): 2455–2460. doi:10.1007/s00436-012-2992-9. PMID22752698. S2CID16270214.
Presswell, B.; Melville, D.S.; Randhawa, H.S. (2012). "Tapeworm bolus expelled from New Zealand variable oystercatcher (Haematopus unicolor) during handling: first record of this phenomenon in wild birds, and a global checklist of Haematopus cestode parasites". Parasitology Research. 111 (6): 2455–2460. doi:10.1007/s00436-012-2992-9. PMID22752698. S2CID16270214.
teara.govt.nz
McLintock, A.H., ed. (1966). "Oystercatcher". An Encyclopaedia of New Zealand. Archived from the original on 2021-01-04. Retrieved 2019-05-08.