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Yellow-browed Sparrow
New World Sparrows · Resident

Yellow-browed Sparrow

Yellow-browed Brush Finch · Ammodramus aurifrons

Least Concern12–13 cm · 14–18 g

By the Birdfact teamChecked byNathan Cope

Known for its distinctive gold markings above the eyes, this small but striking songbird is found on wetland edges and grassy areas across South America.
On this page11 sections
  1. How to recognise it
  2. Its size
  3. Its song and calls
  4. When and where to see it
  5. What it eats
  6. Nesting and breeding
  7. Behaviour
  8. Conservation
  9. More photos
  10. Quick facts
  11. Sources

How to recognise it

The Yellow-browed Sparrow is a short-tailed, long-legged sparrow with a relatively stout bill. Its most distinctive feature is a bright yellow eyebrow (supercilium) set against a grey head with fine dark streaking.

The upperparts are grey with darker streaking, while the underparts are primarily grey on the breast and flanks, becoming off-white on the belly. The wing shows yellow patches at the bend, visible when perched.

Both sexes look identical. Juveniles are similar but duller overall, with less yellow on the face and subtle streaking across the breast.

Its size

Adults
Length
12–13 cm
Wingspan
18–20 cm
Weight
14–18 g

Its song and calls

The Yellow-browed Sparrow's song is a series of high-pitched, buzzy notes, often described as 'tsee-tsee-tsee-tseee'. Their call is a short, sharp 'chip'.

During the breeding season, males sing from exposed perches to defend territory and attract mates.

When and where to see it

The Yellow-browed Sparrow is not recorded regularly in the UK, Ireland, the United States or Canada.

Worldwide: recorded regularly in 6 countries

Countries where it was recorded in at least 3 of the 6 years 2019–2024. Linked countries have their own bird list.

South America (6)

Tips for seeing it

  • Look for them in grassy areas near forest edges or in open woodlands
  • Listen for their distinctive high-pitched, buzzy song
  • Observe early morning or late afternoon when they are most active
  • Use binoculars to spot their characteristic yellow eyebrows

What it eats

The Yellow-browed Sparrow primarily feeds on seeds from grasses and other plants. They supplement their diet with insects, especially during the breeding season.

These birds often forage in small flocks, pecking at the ground or low vegetation.

Nesting and breeding

Breeding typically occurs during the rainy season, which varies across their range. Yellow-browed Sparrows form monogamous pairs during this time.

The female constructs a cup-shaped nest using grasses and plant fibres, usually placed low in dense vegetation or on the ground. The clutch typically consists of 2-3 pale blue or greenish eggs with brown speckles.

Incubation lasts about 12-14 days, primarily carried out by the female. Both parents feed the nestlings, which fledge after approximately 10-12 days.

Behaviour

Yellow-browed Sparrows are typically seen foraging on the ground or in low vegetation, hopping and scratching for food.

They are often found in small groups or pairs and can be quite secretive, quickly retreating to cover when disturbed.

Conservation

While the Yellow-browed Sparrow is currently listed as Least Concern, habitat loss due to deforestation and agricultural expansion poses a potential threat.

Conservation efforts focus on protecting their woodland and grassland habitats across their range.

More photos

3 photos

Quick facts

Length
12–13 cm
Wingspan
18–20 cm
Weight
14–18 g
Lifespan
3–5 years
Migration
Resident
Global status (IUCN)
Least Concern
World population
Not quantified, but common throughout its range
Population trend
Stable
Also called
Yellow-browed Brush Finch
Scientific name
Ammodramus aurifrons

Sources

4
  1. 1BirdLife International. 2024. Ammodramus aurifrons. The IUCN Red List of Threatened Species 2024: e.T22721150A263303831. Source (opens in a new tab)
  2. 2BirdLife International. 2024. Ammodramus aurifrons. The IUCN Red List of Threatened Species 2024: e.T22721150A263303831. Source (opens in a new tab)
  3. 3Stotz et al. (1996)
  4. 4Estimated lifespan based on similar species
Spotted a mistake?Tell usHow we write and checkBy the Birdfact team · Updated

Checked by

Nathan Cope, founder and editor

Nathan founded Birdfact and leads its writers and contributors in the UK, the US and Canada. He has watched and studied birds for more than ten years, and checks every article and species guide before it’s published.

How we write and checkAbout Nathan