ABSTRACT The 169 species of birds recorded on the 30 ha Mo Singto Forest Dynamics Plot, Khao Yai National Park, Thailand, are a subset of the 329 species recorded in the headquarters area of the park. Most of the Mo Singto-recorded species are typical of evergreen forest interior but the transient occurrence of a small number of other species, inhabitants of forest edge or more open habitats, is documented. Almost one third of species found on the plot were moderate to long-distance migrant, non-breeding, visitors. The largest foraging guilds were foliage-gleaning insectivores and sallying insectivores, together accounting for over one-third of all species. Though obligate frugivores were poorly represented, most insectivorous birds incorporated fruits in their diet. The nearly 30-year history of avian recording at Mo Singto, with intensive community studies having been conducted in the past decade, and the location of the study plot near the submontane-montane transition, make it an ideal site for continuation of detailed monitoring, particularly that related to the impact of climate change