Whiskered Tern vs Roseate Tern

In short

Whiskered Terns and Roseate Terns can be distinguished by their tail shape and plumage. Whiskered Terns have a short, slightly forked tail and a darker overall appearance, while Roseate Terns have a deeply forked tail and a paler, more elegant look with a distinctive pink blush in fresh plumage.

Identification tips

1. Tail shape: Whiskered Terns have a short, slightly forked tail; Roseate Terns have a deeply forked tail. 2. Plumage: Whiskered Terns are darker with grey underparts; Roseate Terns are paler with a pink blush in fresh plumage. 3. Cap: Both have black caps, but Whiskered Terns' cap extends to the nape. 4. Calls: Listen for the harsher calls of Whiskered Terns compared to the grating calls of Roseate Terns.

Size

Both species are medium-small terns, but the Whiskered Tern is slightly heavier on average.

Plumage

Whiskered Terns have mid-grey upperparts with darker underparts and a black cap extending to the nape. Roseate Terns are paler with a white body and a pinkish blush in fresh plumage, and they have a black cap during breeding season.

Behaviour

Whiskered Terns often flutter above water before dipping, while Roseate Terns are known for their graceful flight and 'gakkering' threat display.

Habitat

Whiskered Terns are found in freshwater and coastal wetlands, whereas Roseate Terns prefer tropical and subtropical islands and coastal areas.

Voice

Whiskered Terns have a harsher call, described as a rasping 'kyick' or 'cherk', whereas Roseate Terns have grating flight calls.