Radjah Shelduck vs Paradise Shelduck

In short

The Radjah Shelduck and Paradise Shelduck are both large waterfowl, but they can be distinguished by their plumage and geographic range. The Radjah Shelduck has a striking white body with a dark chestnut band across the chest, while the Paradise Shelduck features a more complex pattern with a dark head and chestnut body. Both species are found in different regions, with the Radjah Shelduck in northern Australia and New Guinea, and the Paradise Shelduck in New Zealand.

Identification tips

1. Geographic location: Radjah Shelduck in northern Australia/New Guinea; Paradise Shelduck in New Zealand. 2. Plumage: Look for the Radjah's white body with a chestnut chest band versus the Paradise's dark head and chestnut body. 3. Vocalization: Listen for the Radjah's soft whistles compared to the Paradise's loud honks.

Size

Both species are similar in size, typical of large shelducks, but size alone is not a reliable differentiator.

Plumage

The Radjah Shelduck has a mostly white body with a distinctive dark chestnut band across the chest and dark wingtips. In contrast, the Paradise Shelduck has a dark head and neck with a chestnut body, and males and females have different plumage, with females having a white head.

Behaviour

Both species are often seen in pairs or small groups and exhibit similar behaviors typical of shelducks, such as dabbling and grazing.

Habitat

Radjah Shelducks are found in freshwater wetlands and coastal areas in northern Australia and New Guinea. Paradise Shelducks inhabit a variety of wetland habitats in New Zealand, including lakes, rivers, and estuaries.

Voice

Vocalizations differ between the two, with the Radjah Shelduck producing a soft, whistling call, while the Paradise Shelduck is known for its loud, honking calls, particularly during the breeding season.