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Range DescriptionCarpodectes antoniae occurs on the Pacific coast of Costa Rica and westernmost Panama. The northernmost records are from the mouth of the río Tárcoles and the nearby Carara Biological Reserve. About 40 km to the south, it has been recorded at Parrita and the nearby estuary of the río Palo Seco. The stronghold is probably the area of the Golfo Dulce and the Osa peninsula. The río Sierpe and its estuaries are probably the principal nesting areas, and it also occurs at Golfito, Rincón, Puerto Jimenez, and in small number at ríos Esquinas and Coto and possibly at Carara (E. Jones in litt. 2012).. In Panama, it has been recorded infrequently on the Burica Peninsula, but these non-coastal records are thought to refer to wandering individuals (Angehr 2000, 2003). In 1997, a resident population was discovered at Cerro Batipa and the adjacent David Mangroves, Chiriquí, and the species may also occur in other smaller mangrove areas nearby, such as the Playa de la Barqueta Agrícola Wildlife Refuge (Angehr 2000, 2003). There is a recent sighting from the Golfo de Montijo to the east (G. R. Angehr in litt. 2007). In the 1920s, a (now lost) specimen was apparently taken near Aguadulce, Panama, c.200 km east of the currently known range.