Abstract-In Thailand, one of Southeast Asia countries, agricultural area can be normally found, however, farmlands have been traditionally developed depending on economic benefits. These are likely to cause a variety of mechanisms interacting to habitat change in these areas which bring to the aim of this study. That is to investigate the effect of land use change to ecological factor with focus on bird communities. The study was separated into two parts, including land use analysis and bird species investigation. The suburbs area connected to Suvarnabhumi Airport was selected. From GIS layer evaluation, there were statistical association of the change between the year 1994 and 2002, with significant difference (P<0.01), evaluated by correlation coefficient. For bird species communities, the species disappearance was found from three to thirty-three species depending on the pattern of land use development. The disappearance of species which use paddy fields as their habitats showed significant relationship (P<0.05), evaluated by pearson correlation.Index Terms-Ecological impact, bird index, land use, Suvarnabhumi Airport, Thailand.