Yellow-faced Grassquit

How to find it

Start with weedy fields, pastures and grassy road edges, where seedy grass grows untidy. It is common and can be seen across much of the country, including around houses and in some city areas, so check gardens too. Birds on the ground are harder to see, so look for singing males on low perches. Listen for the quiet, buzzy trill, then scan the nearest low perch. When you find a small flock of seedeaters, go through it slowly, since this grassquit often mixes with other species.

How to recognise it

Start with the adult male, which is the easiest to learn.

- Size: tiny, about 10 cm.

- Face: bright yellow eyebrow, yellow eyelid spot and yellow throat.

- Forehead, face, front of the throat and chest: dull black.

- Back: olive.

- Bill: black, sharper and more cone-shaped than in Sporophila seedeaters.

Females and young birds are dull olive with paler, greyer underparts. Their yellow face marks are faint and may be almost invisible, so a plain olive bird in the same grass deserves a second look. The male's face pattern is striking, while the female shows only slight traces of it.

What it sounds like

Recording: damienxw, CC0 1.0, source, read 4 Nov 2026.

Behaviour and diet

The Yellow-faced Grassquit is usually found in loose flocks, sometimes alone or in pairs. It often joins other small seedeaters in mixed flocks, and these small flocks can look confusing at first.

It forages on the ground and also climbs grass stems, often bending them by hanging from them. It feeds mainly on grass seeds and also takes small fruits and shoots.

The nickname Gallito comes from its temperament: it is very territorial and fights like a gamecock.

Where it lives

In Costa Rica it ranges from sea level up to about 2000 m in places. It is a common to abundant resident on both the Caribbean and Pacific slopes. It is missing from the dry lowlands of the northwest, but it does reach the east Central Valley and nears the mountain passes of the northern ranges.

Look for it in weedy fields, pastures, road edges and unkempt seedy grassland. One Costa Rican blogger describes it as common on hills and mountains and less common in the lowlands, and reports it above 1,700 m.

When to see it

Nesting runs from May to August in Costa Rica and occasionally continues to January.

Similar birds

The male's bright yellow face mask separates it at once from other seedeaters. The sharper, more cone-shaped bill sets it apart from Sporophila seedeaters. Females are the harder case, as they show only slight traces of the face pattern, so lean on the bill shape and the company they keep.

Names and lore in Costa Rica

Costa Ricans call it Gallito, meaning little rooster, for its territorial, gamecock-like fights. The Spanish list name is Semillerito Cariamarillo. Elsewhere it is also called semillero cariamarillo, barba de oro in Colombia and tomeguín de la tierra in Cuba.

Status and conservation

The AOCR official list gives it as a resident (R) in Costa Rica.

Photography tips

Birds on the ground are harder to see, so look for singing males on low perches. Because the song is quiet, approach gently and listen from close range. A grassy road edge with seeding stems is a good place to wait.