There is insufficient ecological and biological information about Pink-headed Warbler. The cloud forests (montane evergreen forests) and pine-oak forests where this species inhabits are restricted in the upper reaches of the mountains, or parts of difficult access, since much of this area has been opened for agricultural crops, livestock, sand banks, and urban growth. The landscape in the highlands of Chiapas is a complex mosaic of successional communities dominated by secondary habitats and rare patches of mature forest (Ochoa-Gaona and González-Espinosa 2000). Some authors (e.g. Curson et al., 1994, Howell and Webb 1995) have suggested that the eruption of Volcan Chichonal in 1982 may have initiated the reduction of Pink-headed Warbler in the northern of the highlands of Chiapas. However, Wilson and Will (1997) suggest that the accelerated change in the landscape in the distribution area has influenced or affected the population decline of this species. Therefore, more studies are needed to know the factors that affect their populations as well as know about their biology and establish conservation or management programs and restore their habitats.