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Range DescriptionGeothlypis beldingi has a fragmented distribution on the Baja California peninsula, Mexico. The nominate race is known from at least 15 sites11 with important concentrations at Punta San Pedro (70 birds), Santiago (178-442 birds)11 and San José del Cabo (219-480 birds), and the race goldmani is now known from at least 12 sites including large numbers at San Ignacio (537-648 birds) and La Purísima4,7. The population at San José del Cabo increased in 2009 to an estimated 487-700 adults, probably related to a chance increase in the quality of habitat9. It is common at most of these sites, but the area of suitable habitat is probably very restricted4. It appears to have been extirpated from at least one site (El Triunfo)7. However, in 2009 up to three adults were present at El Oro11. This might be the location referred to as El Triunfo, where the species was collected in 192411. Another small breeding population was recently found at Las Cuevas10, and San Dionisio9, near Santiago.