I only managed to visit two of the locations included in this site, Pang Sida NP and Khao Yai NP.
Pang Sida I accessed from Sa Kaeo, a station on the Eastern Line while travelling from Aranyaprathet to Bangkok. A 30 minute ride by tuktuk took me to the park where I visited the falls and the park headquarters. The road through the park was closed due to the clouds of butterflies swarming over the road and creating a hazard for motorists. But stopping to see this sight was amazing, especially the wide variety of different coloured creatures.
I spent three days at a small resort near Pak Chong and made several visits to various parts of the Khao Yai park. Apart from travelling the roads and visiting several waterfalls I also made two escorted forays into the jungle on foot. Here we found a wide vaiety of fauna and flora, especially numerous species of multicoloured birds. But I also encountered several types of snake, troops of macaques, clans of gibbons swinging high in the tree canopy, several species of deer. Also saw fresh elephant droppings, but failed to glimpse the animals themselves. One of the wierdest phenomena was at sundown, watching millions of bats emerge from underground caves and create huge clouds of the creatures as they set off for their nightly feeding frenzy.