Formerly classified as a species of least concern by the IUCN, it was suspected to be rarer than generally assumed. Following the evaluation of its population size, this was found to be correct, and it is consequently uplisted to near-threatened status in 2008.
- BirdLife International (BLI) (2008): http://www.birdlife.org/action/science/species/global_species_programme/whats_new.html 2008 IUCN Redlist status changes. Retrieved 2008-MAY-23.
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