Swallow spp on the waterways at Tortuguero.

Blue and White Swallows at Monte Verde

Blue and white swallow at Monte Verde - the black undertail coverts are diagnostic

Mangrove swallow at Tortuguero. Note the white line over the eye

Cliff swallow over the waterways at Tortuguero.

Southern-rough winged Swallow in the Arenal volcano area. Note the cinnamon throat which distinguishes it from Northern rough-winged swallow.

Also Barn swallow (in tail moult) at Tortuguero.