งานวิจัยและบทความ

The bird community in a disturbed mature forest was compared with that found in secondary forest and a regenerating clearing.  The mature forest sample areas had only y
slightly higher species richness, but relatively greater diversity as measured by Fisher's a index of diversity.  The commonest species were relatively more abundant in the secondary forest and clearings than in mature forest habitat.  The secondary forest nevertheless was still rich in bird species, supporting some nationally or internationally threatened species including terrestrial insectivores such as Gurney's Pitta Pitta gurneyi and Large Wren-Babbler Napothera macrodactyla. However, specialist frugivores such as pigeons, Green Broadbill Calyptomena viridis and Asian Fairy Bluebird Irena puella and some arboreal insectivores such as malkohas, woodpeckers and Malacopteron babblers, were much Iess frequent in the secondary forest than in the tall forest. Secondary forest and clearing were similar in the overwhelming abundance of a few species of bulbuls which were generalist insectivore-frugivores.  Patches of secondary or degraded forest outside the margins of parks or sanctuaries may offer the only option for the expansion of protection into the lowland forest biome since there is virtually no mature forest left in the Thai lowlands. More work needs to be done to judge the conservation attributes of the smaller and more isolated forest fragments.