Alström's Warbler vs Greenish Warbler

In short

Alström's Warbler and Greenish Warbler are similar leaf warblers, but can be distinguished by their structure and vocalizations. Alström's Warbler has a more pronounced supercilium and different song pattern compared to the Greenish Warbler.

Identification tips

• Supercilium: Look for a more pronounced and longer supercilium in Alström's Warbler.
• Song: Listen for the distinctive song patterns; Alström's Warbler has a different song compared to the repetitive song of the Greenish Warbler.
• Habitat: Consider the habitat; Alström's Warbler is more likely in montane forests.

Size

Both species are small and similar in size, typical of leaf warblers.

Plumage

Alström's Warbler tends to have a more distinct and longer supercilium compared to the Greenish Warbler. Both have greenish upperparts, but the Greenish Warbler may appear slightly duller.

Behaviour

Both species exhibit typical leaf warbler behavior, such as active foraging among foliage.

Habitat

Both species inhabit forested areas, but Alström's Warbler is more often found in subtropical and tropical montane forests, while Greenish Warbler can be found in a wider range of forest types.

Voice

Alström's Warbler has a distinctive song pattern that differs from the Greenish Warbler, which is known for its repetitive and high-pitched song.