Brown-winged Schiffornis vs Cinereous Mourner

In short

The Brown-winged Schiffornis and Cinereous Mourner are both understory birds of the Amazon, making them challenging to distinguish. The Brown-winged Schiffornis is primarily brown or olive-brown with large dark eyes, while the Cinereous Mourner has a more uniform greyish appearance. Vocalizations are key: the Schiffornis has a distinctive three-note whistle, whereas the Mourner's call is less described.

Identification tips

1. Listen for vocalizations: The Schiffornis' three-note whistle is distinctive. 2. Observe plumage: Look for the brown or olive-brown tones of the Schiffornis versus the greyish tones of the Mourner. 3. Note behavior: Both are solitary and low in the understory, but the Schiffornis is more often heard than seen.

Size

Both species are similar in size, typical of medium-sized passerines.

Plumage

Brown-winged Schiffornis is primarily brown or olive-brown with paler underparts and large dark eyes. In contrast, the Cinereous Mourner has a more uniform greyish plumage.

Behaviour

Both species are solitary and forage within 1–2 meters of the ground. The Schiffornis is often heard more than seen, while specific behavioral notes on the Mourner are limited.

Habitat

Both species inhabit the understory of terra firme forests in the Amazon. They share similar ecological niches.

Voice

The Brown-winged Schiffornis has a distinctive three-note whistle, with the first note being longer and ending with a sharp upward inflection. The Cinereous Mourner's vocalizations are less well-documented.