Radjah shelduck
Radjah radjah (Garnot & R. Lesson, 1828)
The radjah shelduck (Radjah radjah) is a species in the family Anatidae, order Anseriformes. Recorded adults weigh 839 g to 934 g. Source checklists list it for 1 country: Australia. Its IUCN Red List status is Least Concern.

Quick facts about the radjah shelduck
- Weight
- 839 g – 934 gsrc for Weight
- Length
- Not recorded
- Lifespan
- Not recorded
- Diet
- Aquatic predatorsrc for Diet
- Main food
- Not recorded
- Habitat
- coastalsrc for Habitat
- Egg incubation
- 30 dayssrc for Egg incubation
- Young per litter or clutch
- 8.5 – 9src for Young per litter or clutch
- Litters or clutches a year
- 1src for Litters or clutches a year
- Lifestyle
- Terrestrialsrc for Lifestyle
- Migration
- Partialsrc for Migration
- Conservation status
- Least Concern (IUCN)src for Conservation status
- Countries on record
- 1 countrysrc for Countries on record
Where does the radjah shelduck live?
Countries where Catalogue of Life checklists list the species. Many checklists carry no country data, so the list is often incomplete. It is not a range map.
The radjah shelduck is listed for 1 country.
- Listed
- Not listed
The same countries as a list
Why a country list is not a range map
Listed by: ITIS (scope: global), through the Catalogue of Life.
What is the radjah shelduck?
The radjah shelduck (Radjah radjah) is a species of shelduck found mostly in New Guinea and Australia, and also on some of the Moluccas. It is known alternatively as the raja shelduck, black-backed shelduck, or in Australia as the Burdekin duck.
From the Wikipedia article “Radjah shelduck” (en.wikipedia.org/w/index.php?title=Radjah_shelduck&oldid=1361791937), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.
Is the radjah shelduck endangered?
The radjah shelduck is listed as Least Concern on the IUCN Red List: it is not currently at risk of extinction.
- LCLeast Concern
- NTNear Threatened
- VUVulnerable
- ENEndangered
- CRCritically Endangered
- EWExtinct in the Wild
- EXExtinct
Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Least Concern species. What the categories mean.
How is the radjah shelduck classified?
- kingdomAnimalia
- phylumChordata
- classAves
- orderAnseriformes
- familyAnatidae
- genusRadjah
- SpeciesRadjah radjah (Garnot & R. Lesson, 1828)
Synonyms Casarca radjah, Radjah eytoni, Tadorna radjah
Other names and names in other languages (38)
- Burdekin duckEnglish
- Raja shelduckEnglish
- Raja shelduckEnglish
- بط برودكينArabic
- شهرمان راجاArabic
- ànec de collarCatalan
- husice bělohlaváCzech
- husice královskáCzech
- hwyaden fraith rajaWelsh
- RadjahgravandDanish
- RadjahgansGerman
- raĝa tadornoEsperanto
- Tarro rajáSpanish
- valge-ristpartEstonian
- pulmussorsaFinnish
- Tadorne radjahFrench
- bjeloglava utvaCroatian
- radjah ásólúdHungarian
- Umukia rajaIndonesian
- Casarca del ragiàItalian
- シロガシラツクシガモJapanese
- baltakaklė urvinė antisLithuanian
- RadjaheendDutch
- Radjah-eendDutch
- beltegravandNorwegian
- kazarka nadobnaPolish
- pato-rajáPortuguese
- Tadorna-da-OceaniaPortuguese
- tadorna-da-oceâniaPortuguese
- Tadorna-de-cabeça-brancaPortuguese
- Пеганка-раджаRussian
- kazarka radžaSlovak
- Bela utvaSerbian
- vithuvad gravandSwedish
- Ak Başlı SunaTurkish
- галагаз-раджаUkrainian
- 白腹麻鴨Chinese
- 白腹麻鸭Chinese
Relatives of the radjah shelduck
Other species in the same family Anatidae.

Mallard
Anas platyrhynchos

Greylag goose
Anser anser

Northern pintail
Anas acuta

Mute swan
Cygnus olor

Eurasian teal
Anas crecca

Ruddy shelduck
Tadorna ferruginea
CompareRadjah shelduck vs MallardRadjah shelduck vs Greylag gooseRadjah shelduck vs Northern pintailRadjah shelduck vs Mute swan
Common questions
Answered only where our data holds the answer.
How big is the radjah shelduck?
An adult radjah shelduck weighs 839 g – 934 g, according to values recorded on Wikidata.
Where does the radjah shelduck live?
Catalogue of Life checklists list the radjah shelduck for 1 country: Australia. Checklist coverage is uneven, so the true range may be wider.
Is the radjah shelduck endangered?
The radjah shelduck is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.
What kind of animal is the radjah shelduck?
The radjah shelduck (Radjah radjah) belongs to the family Anatidae in the order Anseriformes.
Sources and how to cite this page
Data as of 2026-11-11. How this page is put together.
- An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles · CC0 1.0 · E096-269
Myhrvold, N.P., Baldridge, E., Chan, B., Sivam, D., Freeman, D.L. & Ernest, S.K.M. (2015) An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96: 3109. https://doi.org/10.1890/15-0846R.1. Data: https://doi.org/10.6084/m9.figshare.3563457.v1 - AVONET: morphological, ecological and geographical data for all birds · CC BY 4.0 · v7
Tobias, J.A. et al. (2022) AVONET: morphological, ecological and geographical data for all birds. Ecology Letters 25: 581–597. https://doi.org/10.1111/ele.13898. Data: https://doi.org/10.6084/m9.figshare.16586228.v7 - Catalogue of Life eXtended Release · CC BY 4.0 · 2026-10-16 XR
Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf - Wikimedia Commons · per file (CC0 / public domain / CC BY green, CC BY-SA amber, anything else not displayed) · 2026-11-11
Wikimedia Commons contributors. Wikimedia Commons. https://commons.wikimedia.org (each file credited to its author under its own licence). - Wikidata · CC0 1.0 · 2026-11-11
Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service). - Wikipedia (English) · CC BY-SA 4.0 · 2026-11-11
Wikipedia contributors. Wikipedia, The Free Encyclopedia. https://en.wikipedia.org (text under CC BY-SA 4.0; each block names its article and revision).
Embed a card for this animal on your own site
Copy this code. The card shows the photo with its credit, key facts and a link back to this page.
CreatureData. (2026). Radjah shelduck (Radjah radjah). Retrieved from https://creaturedata.com/animals/radjah-shelduck
“Radjah shelduck (Radjah radjah).” CreatureData, 2026, https://creaturedata.com/animals/radjah-shelduck.
@misc{radjah_shelduck_2026,
title = {Radjah shelduck (Radjah radjah)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/radjah-shelduck},
note = {Data as of 2026-11-11}
}