This species probably formerly occupied large areas of
Puerto Rico (to U.S.A.), but its current distribution was recently thought to be restricted to the south-west, notably Susúa-Maricao, Guayanilla-Peñuelas and Guánica-Bermeja. However, recent survey work confirms that its range extends from Ponce through south-central Puerto Rico to Guayama province in the south-east (Vilella and González 2009). There are further recent records from the Parguera Hills and Sierra Bermeja,
c. 10 km west of Parguera. Studies in 1985-1987, 1989-1990 and 1992 found 712 singing males in 98 km
2 of fragmented habitat, with 347 in the Guánica area, 177 in the Susúa-Maricao area and 188 in the Guayanilla area. The population was consequently estimated at 1,400-2,000 individuals, which is similar to the 1984 population estimate of 670-800 pairs (Vilella and Zwank 1993a).
Rights Holder: International Union for Conservation of Nature and Natural Resources
Bibliographic Citation: BirdLife International 2012.
Antrostomus noctitherus. In: IUCN 2014 . IUCN Red List of Threatened Species. Version 2014.1 . <
www.iucnredlist.org>
