Animalia > Chordata > Aves > Anseriformes > Anatidae > Tadorna > Tadorna radjah

Tadorna radjah (Raja Shelduck; Radjah Shelduck)

Wikipedia Abstract

The radjah shelduck (Tadorna 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.
View Wikipedia Record: Tadorna radjah


Tadorna radjah radjah (Moluccan radjah shelduck)
Tadorna radjah rufitergum (Australian radjah shelduck)

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 5.55262
EDGE Score: 1.87986


Adult Weight [1]  1.953 lbs (886 g)
Birth Weight [2]  59 grams
Female Weight [1]  1.85 lbs (839 g)
Male Weight [1]  2.059 lbs (934 g)
Weight Dimorphism [1]  11.3 %
Diet [3]  Carnivore (Invertebrates), Herbivore
Diet - Invertibrates [3]  80 %
Diet - Plants [3]  20 %
Forages - Ground [3]  60 %
Forages - Water Surface [3]  40 %
Clutch Size [5]  9
Incubation [4]  30 days


Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Purnululu National Park II 604999 Western Australia, Australia
Shoalwater and Corio Bays Area Ramsar Site   Queensland, Australia
Wasur-Rawa Biru National Park 605464 Papua, Indonesia  

Biodiversity Hotspots

Name Location Endemic Species Website
Wallacea East Timor, Indonesia No


Parasitized by 
Amidostomum acutum[6]
Holomenopon leucoxanthum[6]
Hymenolepis lamellata <Unverified Name>[6]
Hymenolepis megalops <Unverified Name>[6]

Institutions (Zoos, etc.)


External References



Attributes / relations provided by
1Marchant, S.; Higgins, PJ (eds.) 1990. The handbook of Australian, New Zealand and Antarctic birds, Vol. 1., ratites to ducks. Oxford University Press, Melbourne
2Terje Lislevand, Jordi Figuerola, and Tamás Székely. 2007. Avian body sizes in relation to fecundity, mating system, display behavior, and resource sharing. Ecology 88:1605
3Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
4del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
5Jetz W, Sekercioglu CH, Böhning-Gaese K (2008) The Worldwide Variation in Avian Clutch Size across Species and Space PLoS Biol 6(12): e303. doi:10.1371/journal.pbio.0060303
6Species Interactions of Australia Database, Atlas of Living Australia, Version ala-csv-2012-11-19
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License