Rough-legged Tyrannulet vs Greenish Tyrannulet

In short

The Rough-legged Tyrannulet and Greenish Tyrannulet can be distinguished by their plumage and behavior. The Rough-legged Tyrannulet has a gray crown and grizzled ear coverts, while the Greenish Tyrannulet features a pale supercilium and is more likely to join mixed-species flocks. Both species have olive upperparts and yellowish underparts.

Identification tips

1. Look for the gray crown and grizzled ear coverts of the Rough-legged Tyrannulet. 2. Note the pale supercilium and olive-green upperparts of the Greenish Tyrannulet. 3. Observe behavior: Greenish Tyrannulet often joins mixed-species flocks. 4. Both species have yellowish underparts, so focus on head markings and behavior.

Size

Both species are small tyrannulets with similar size and structure.

Plumage

The Rough-legged Tyrannulet has a gray crown and gray-grizzled ear coverts, with two yellowish wing bars. In contrast, the Greenish Tyrannulet displays a pale supercilium and double wing bars, with more olive-green upperparts.

Behaviour

The Greenish Tyrannulet is frequently seen in mixed-species flocks in the canopy and at middle levels, a behavior less typical of the Rough-legged Tyrannulet.

Habitat

Both species are found in similar forested habitats, but the Greenish Tyrannulet is often more common and widespread.