Whiskered Tern vs White-winged Black Tern

In short

The Whiskered Tern and White-winged Black Tern are similar medium-small terns, but the Whiskered Tern has a darker belly and a shorter tail. In non-breeding plumage, the Whiskered Tern shows a less contrasting crown pattern compared to the White-winged Black Tern.

Identification tips

• Breeding plumage: Look for the darker belly and shorter tail of the Whiskered Tern.
• Non-breeding plumage: Whiskered Tern has a less contrasting crown pattern and a black patch behind the eye.
• Behavior: Note the Whiskered Tern's tendency to hawk insects over fields.
• Vocalization: Listen for the harsher calls of the Whiskered Tern.

Size

Both species are similar in size, with the Whiskered Tern having a wingspan of 64–70 cm.

Plumage

In breeding plumage, the Whiskered Tern has a black cap extending to the nape with white cheeks and mid-grey upperparts, while the White-winged Black Tern has more contrasting black and white plumage. Non-breeding Whiskered Terns are paler with a dark-flecked crown and a black patch behind the eye.

Behaviour

Both species engage in aerial-dipping and hover-dipping to catch prey, but the Whiskered Tern is noted for hawking insects over fields and lake margins.

Habitat

Both species are found in similar wetland habitats, but specific habitat preferences are not detailed in the sources.

Voice

The Whiskered Tern has a harsher call with a rasping 'kyick' or 'cherk', while the White-winged Black Tern's calls are not detailed here.