Gray-breasted Martin

How to find it

Look in open places, especially around buildings, bridges and fresh clearings with scattered cut trees. Check for a bird perched higher than the other swallows beside it. Birds often sit on antennas near buildings, so scan those. A guide told one visitor that they nest in gaps under corrugated metal roofs, so look around such roofs. Another guide notes that it flies almost constantly and seldom perches except to enter nest holes under eaves, so nest sites are the best place to wait. The ferry crossing from Puntarenas to Playa Naranjo is another place where one was photographed.

How to recognise it

Think big and solid. This is the largest and sturdiest resident swallow in Costa Rica.

The adult male is glossy blue-black above. It has a broad bill and a forked tail. The throat, breast and sides are grey-brown (a brownish throat, in Costa Rican accounts) and they contrast with a white lower belly, so the bird always looks mainly white below.

Females are duller, with a paler throat. Juveniles have dull brown upperparts and can look smudgy brown underneath. One visitor mistook a group of perched young for Northern Rough-winged Swallows until a guide with a scope confirmed them as martins.

What it sounds like

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

Behaviour and diet

This is a sociable swallow. Outside the breeding season, hundreds gather to roost on wires or beams. It flies fast and straight, then glides for long stretches over big distances with its wings held out.

The Costa Rican account calls it a nomad: individuals forage over a wide area every day rather than staying on one small patch. In Costa Rica it breeds from March to May, nesting in crevices in buildings and bridges or in old woodpecker holes in dead trees.

Where it lives

In Costa Rica it is a common, locally abundant resident across the country, up to about 1700 m elevation. The conservation areas listed for it are Amistad Caribe, Amistad Pacifico, Cordillera Volcanica Central, Pacifico Central, Tempisque, Tortuguero, Huetar Norte, Arenal, Osa and Guanacaste.

Across its wider range it lives in many semi-open habitats and adapts well to towns and villages, readily nesting under building eaves and in drainpipes.

When to see it

It is missing from many breeding areas from about September to January. It probably moves around inside Costa Rica rather than making long migrations.

Similar birds

The closest look-alike is the female Purple Martin, a migrant. She has a pale forehead, a pale grey collar on the neck sides and darker underparts, while the male Purple Martin is dark blue below. Southern Martin is a very rare Costa Rican bird, and the Gray-breasted differs from it, and from Peruvian Martin, by its greyish breast and white belly. The Caribbean Martin sounds much alike but is slightly larger with more contrasting underparts.

Names and lore in Costa Rica

Costa Rican sources give the common local name Golondrón, meaning a big swallow, alongside the AOCR name Martín Pechigrís. A Guanacaste golf course bird guide also records the nicknames "Cristo-fue" and "Pecho Amarillo".

Status and conservation

The AOCR lists it as a resident (R), and the IUCN rates it Least Concern across a very large range from the southern United States to Argentina.

Photography tips

Expect the bird to be high and often at a distance, so a long lens suits it. At Tárcoles, one photographer used a 400 mm lens on a bright day with a fast shutter speed. Antennas near buildings and nest sites under eaves or corrugated metal roofs are good places to wait.