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Range DescriptionHylorchilus navai has a restricted range in easternmost Veracruz (six sites in the Uxpanapa region, at the mid-point of the Isthmus of Tehuantepec), with records from one site in west Chiapas, and two in east Oaxaca, south Mexico (Gomez de Silva 1997). The total extent of its range was initially estimated at 4,800-4,900 km2, within which it is fairly common but local (Howell and Webb 1995a, Gomez de Silva 1997). However, further mapping indicates that the known range is likely to be considerably smaller. In 1992, a crude density estimate of c.20 birds/km2 was calculated at El Ocote in Chiapas (Atkinson et al. 1993).