The marshes of eastern Rio Grande do Sul in south-east Brazil, Uruguay and Buenos Aires in Argentina mark the range of Straight-billed Reedhaunter Limnornis rectirostris (see map, p. 298). This species is confined almost exclusively to marshes of spiny sedge Eryngium, which is found mainly on the coast but also in the upland plateau zone of eastern Rio Grande do Sul. The species is not currently considered threatened, but has certainly declined in some parts of its range such as coastal Uruguay and in Buenos Aires province of Argentina where marshes are drained for development and agriculture. It is common in Aparados da Serra National Park (123 km²) and north-east Rio Grande do Sul, and there is a small population in Otamendi Strict Nature Reserve (26 km²) in north-east Buenos Aires.

Recommended citation
BirdLife International (2024) Endemic Bird Area factsheet: Coastal Uruguay marshes. Downloaded from https://datazone.birdlife.org/eba/factsheet/334 on 22/11/2024.