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- Limited study (Frith 1967)
- Diet composition appears to vary with geography (Marchant and Higgins 1990; Carboneras and Kirwan 2018)
- More animal food in Northern Territory
- More plant matter in northern Queensland
- Invertebrates (Phillips 1922; Frith 1967; Carboneras and Kirwan 2018)
- Aquatic molluscs and worms
- Plant matter (Frith 1967; Marchant and Higgins 1990; Carboneras and Kirwan 2018)
- Possibly the seeds of native plants
- Feed in pairs or small groups (Pizzey 2012)
- Pairs appear to defend a feeding territory (Frith 1967)
- Move about quickly (Marchant and Higgins 1990)
- Forage along shoreline, edges of marsh, or in shallow water (Pizzey 2012)
- Typically feed entirely on land or in water about 1 to 2 inches deep (Frith 1967)
- Prefer wet or soft ground (Frith 1967; Carboneras and Kirwan 2018)
- Wade along water’s edge and move bill from side-to-side (Marchant and Higgins 1990; Carboneras and Kirwan 2018)
- Filter mud or water (at surface)
- While swimming, dabble (Pratt and Beehler 2014) or upend in shallow water (Carboneras and Kirwan 2018)
Feasting in the Shallows
Radjah Shelducks commonly forage along shorelines and the edges of marshes.
These ducks prefer to feed in shallow water, where they can easily wade.
Image credit: © San Diego Zoo Global. All rights reserved.