These are active little
birds. We didn't see them often, but when we did they were usually foraging in small flocks. The bottom bird has
feathers wet from bathingBirds breeding along the coast of the Gulf of Thailand are assigned the race Z. p. williamsoni according to HBW and Robson. This race has more yellow on the forehead and a narrow yellow belly stripe as seen here. Populations in northern Thailand (race siamensis of HBW but apparently synonymized with nominate by Clements) has a yellow morph in which the entire underparts are yellow.
Digiscoped with Panasonic DMC-LX5 | Nikon FieldScope III | 30XWA |hand-held (no adapter).