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Range DescriptionAmazilia boucardi is very local on the Pacific coast of Costa Rica from the head of Golfo de Nicoya to Golfo Dulce. The species was recently discovered in two new mangrove forest sites on the outer Nicoya Peninsula; a female was trapped in January 2005 and two were trapped in 2006 at Estero Tamarindo (Las Baulas de Guanacaste Marine National Park), and in August 2006, a male and female were observed at Playa Venado (R. Garrigues in litt. 2007). It is patchily distributed even within the four or five large mangrove forests in this range (Harcourt and Sayer 1996), probably reflecting the presence of its preferred food-plant, the Pacific mangrove Pelliciera rhizophorae. Despite tolerating some habitat alteration where P. rhizophorae remains common, it is absent from many areas of apparently suitable habitat. The population in the Important Bird Areas of Costa Rica has been estimated at 2,150-4,150 mature individuals (J. Criado et al. in litt. 2007).