Pacific reef heron (English Wikipedia)

BirdLife International (2018). "Egretta sacra". IUCN Red List of Threatened Species. 2018: e.T22696980A131759460. doi:10.2305/IUCN.UK.2018-2.RLTS.T22696980A131759460.en. Retrieved 12 November 2021.
Lavery, Tyrone H.; Watson, Justin J.; Leung, Luke K.-P. (2012). "Terrestrial vertebrate richness of the inhabited Torres Strait Islands, Australia". Australian Journal of Zoology. 60 (3): 180–191. doi:10.1071/ZO12043. S2CID 73537024.
Steadman, David W. (1993). "Biogeography of Tongan birds before and after human impact". Proceedings of the National Academy of Sciences of the United States of America. 90 (3): 818–882. Bibcode:1993PNAS...90..818S. doi:10.1073/pnas.90.3.818. PMC 45761. PMID 11607357.

gw.govt.nz

McArthur, Nikki; Ray, Samantha; Crowe, Patrick; Bell, Mike (August 2019). A baseline survey of the indigenous bird values of the Wellington region coastline (PDF) (Report). p. 19.

Steadman, David W. (1993). "Biogeography of Tongan birds before and after human impact". Proceedings of the National Academy of Sciences of the United States of America. 90 (3): 818–882. Bibcode:1993PNAS...90..818S. doi:10.1073/pnas.90.3.818. PMC 45761. PMID 11607357.

Beaune, David; Ghestemme, Thomas; Raust, Philippe; Blanvillain, Caroline (2018). "Herons of French Polynesia: threats, status and conservation" (PDF). Journal of Heron Biology and Conservation. 3. Retrieved 30 January 2020.

Steadman, David W. (1993). "Biogeography of Tongan birds before and after human impact". Proceedings of the National Academy of Sciences of the United States of America. 90 (3): 818–882. Bibcode:1993PNAS...90..818S. doi:10.1073/pnas.90.3.818. PMC 45761. PMID 11607357.

Steadman, David W. (1993). "Biogeography of Tongan birds before and after human impact". Proceedings of the National Academy of Sciences of the United States of America. 90 (3): 818–882. Bibcode:1993PNAS...90..818S. doi:10.1073/pnas.90.3.818. PMC 45761. PMID 11607357.

Marchant, S.; Higgins, P.G., eds. (1990). "Ardea sacra Eastern Reef Egret" (PDF). Handbook of Australian, New Zealand & Antarctic Birds. Volume 1: Ratites to ducks; Part B, Australian pelican to ducks. Melbourne, Victoria: Oxford University Press. pp. 1002–1009, Plate 71. ISBN 978-0-19-553068-1.
Chambers, Stuart (2009). Birds of New Zealand: locality guide (PDF) (3rd ed.). Orewa, New Zealand: Arun Books. p. 91.
"Reef heron Egretta sacra". New Zealand Birds Online. Retrieved 29 May 2021.

"Pacific or Eastern Reef Egret". www.oiseaux-birds.com. Retrieved 25 September 2024.

Lavery, Tyrone H.; Watson, Justin J.; Leung, Luke K.-P. (2012). "Terrestrial vertebrate richness of the inhabited Torres Strait Islands, Australia". Australian Journal of Zoology. 60 (3): 180–191. doi:10.1071/ZO12043. S2CID 73537024.

Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (August 2022). "Ibis, spoonbills, herons, Hamerkop, Shoebill, pelicans". IOC World Bird List Version 12.2. International Ornithologists' Union. Retrieved 28 November 2022.