Trumpeter Finch vs Plain Mountain Finch

In short

The bill shape is the most reliable field mark: Trumpeter Finch has a short, thick, and conical bill, while Plain Mountain Finch has a more slender, pointed bill. In terms of plumage, Trumpeter Finch often shows a pinkish hue, especially in males, while Plain Mountain Finch is generally more uniformly brown and gray.

Identification tips

1. Check the bill shape: Trumpeter Finch has a thicker, conical bill, while Plain Mountain Finch's bill is more slender and pointed. 2. Look for pinkish tones: Trumpeter Finch males often show pinkish hues, especially during breeding. 3. Consider the habitat: Trumpeter Finch is found in arid regions, while Plain Mountain Finch prefers high-altitude areas. 4. Listen for calls: Trumpeter Finch has a nasal, trumpet-like call.

Size

Both species are similar in size, typical of small finches, making size an unreliable distinguishing feature.

Plumage

Trumpeter Finch males display a pinkish wash on the face and underparts, especially during the breeding season, whereas Plain Mountain Finch is more uniformly brown and gray with no pink tones. Females and non-breeding males of Trumpeter Finch are duller but still may show some pinkish tones.

Behaviour

Both species can be seen foraging on the ground, but Trumpeter Finch often occurs in more arid, open habitats, while Plain Mountain Finch is more likely to be found in alpine or subalpine environments.

Habitat

Trumpeter Finch prefers arid, desert-like environments with sparse vegetation, whereas Plain Mountain Finch is found in high-altitude, rocky, and grassy areas.

Voice

Trumpeter Finch has a distinctive, nasal 'trumpet-like' call, while Plain Mountain Finch's call is less distinctive and more typical of finches.