Ruddy-breasted Seedeater

How to find it

Go in with realistic hopes, because guides call this seedeater unpredictable. In the southern Pacific it is regular in grassy fields, yet it can be common one year and seem absent the next. Guides in the south name La Gamba Road near San Vito as the best place for seedeaters, especially this species and the Slate-colored. The San Joaquin wetlands near the San Vito airstrip are also good, and a spotting scope helps there. Boat trips on the Tárcoles River have recently turned up this nomadic little bird, and rice fields near Jacó may also hold it. Scan fence lines and wires for singing males first.

How to recognise it

Start with the male, the easy one.

Adult males have dull olive-gray upperparts, cinnamon-rufous underparts and rump, and a rusty reddish chest. The bill is blackish with a slightly yellowish base. The whole bird is about 9 cm and 8 g, so think tiny.

Females and young birds are a different story. Across the species' range they are very buffy and plain, small, whitish and pale-billed. In Costa Rica they lack the wing bars of Morelet's (Variable-group) seedeater, which also has a larger bill and body. Look first for the brick-red males, then check the quieter birds beside them.

What it sounds like

Recording: keesgroenendijk, CC BY 4.0, source, read 4 Nov 2026.

Behaviour and diet

Like other seedeaters, it feeds mainly on grass seeds in open habitats. Outside the breeding season it often forages in flocks, which helps explain why a patch of grass can seem empty one day and busy the next.

Males often sing from exposed perches such as roadside fences and wires, which makes them much easier to find than females. The nest is a small cup of grass stems and rootlets, set in a grass clump or low dense shrub, usually less than 1 m above ground.

Where it lives

In Costa Rica this is a resident of savannas and grasslands, where it is locally common. Its Costa Rican range covers the Térraba region in the south and the Río Frío region in the north.

It has been photographed in the wetlands of San Carlos and Los Chiles in the north, recorded in Guanacaste, and listed for the south Pacific. Across its wider range, natural habitats are dry savanna, seasonally wet or flooded lowland grassland, and heavily degraded former forest.

When to see it

In late April, visitors to the Medio Queso marsh in the north can hear good numbers of singing males.

Similar birds

The male Variable Seedeater is the common look-alike, and it is by far the most common seedeater on both slopes. In the deep south it is abundant in any grassy habitat. The Ruddy-breasted is the one with rusty underparts and rump, so it is distinctive among Costa Rican seedeaters. The Yellow-bellied Seedeater, with its black head and chest, shares the same fields.

Names and lore in Costa Rica

Costa Rican sources call it espiguero menudo, and also "semillero". The official list adds the nickname "setillero ladrillo", meaning brick seedeater, which refers to the male's brick-red underparts. Other countries use different Spanish names for the same bird, such as espiguero canelo in Nicaragua and espiguero pechirrojizo in Panama and Ecuador.

Status and conservation

The official Costa Rican list marks it as a resident (R), and BirdLife International rates it Least Concern.

Photography tips

Males often sing from exposed perches such as roadside fences and wires, so scan those first. A spotting scope helps for distant birds in wet fields.