borboletinha-do-mato vs sebinho-de-olho-de-ouro

The Mottle-cheeked Tyrannulet and Pearly-vented Tody-Tyrant can be distinguished by their plumage and behavior. The Mottle-cheeked Tyrannulet is olive-green with prominent white wing markings, while the Pearly-vented Tody-Tyrant has a more subtle plumage. Behaviorally, the Mottle-cheeked Tyrannulet is more active and often joins mixed-species flocks.

Look for olive-green plumage with white wing markings on the Mottle-cheeked Tyrannulet. Observe behavior: if the bird is actively foraging and joining mixed-species flocks, it is likely a Mottle-cheeked Tyrannulet.

The Mottle-cheeked Tyrannulet is principally olive-green above with obvious wingbars and prominent white markings on the tertials. In contrast, the Pearly-vented Tody-Tyrant has less distinctive plumage, lacking the prominent white wing markings.

The Mottle-cheeked Tyrannulet perches broadly horizontally, holds its tail slightly cocked, and is very active, often joining mixed-species flocks. The Pearly-vented Tody-Tyrant's behavior is not detailed in the notes.