Boulder Finch vs Black-masked Finch

In short

To distinguish the Boulder Finch from the Black-masked Finch, focus on habitat and plumage. The Boulder Finch is typically found in high-Andean grass-steppe habitats with boulders, while the Black-masked Finch prefers tall grasslands with shrubs. Plumage differences include the Boulder Finch's more muted coloration compared to the Black-masked Finch's striking black face and white supercilium.

Identification tips

1. Check habitat: Boulder Finch in rocky high-Andean areas, Black-masked Finch in tall grasslands. 2. Look for plumage: Black-masked Finch's distinctive black face and white supercilium. 3. Listen for song: Black-masked Finch's high-pitched, insect-like notes.

Size

Both species are small finches, but size is not a reliable differentiator.

Plumage

The Boulder Finch has a more subdued appearance, often blending with its rocky surroundings. In contrast, the Black-masked Finch is notable for its black face, bold white supercilium, and bicolored orange and black bill. It also has olive-green upperparts and white underparts.

Behaviour

The Boulder Finch is often seen foraging on the ground or probing lichen and moss on boulders. The Black-masked Finch is more likely to be found in tall grasslands, sometimes perched on shrubs or palms.

Habitat

Boulder Finches are found in high-Andean grass-steppe habitats with boulders, while Black-masked Finches inhabit tall grasslands with interspersed shrubs or palms, often in fragmented ranges.

Voice

The Black-masked Finch has a high-pitched, insect-like song consisting of paired notes. There is no specific vocalization information for the Boulder Finch.