Plain-tailed Warblers...like buses

SRF for an hour and a half before work produced 2-3 Asian Brown Flycatchers, a Brown Shrike, 5+ Blue-tailed Bee-eaters and rather surprisingly (given my first site record was only on Sunday) two Plain-tailed Warblers; one in stream-side bamboo and the other in a dense clump of vegetation in the Park's ornamental gardens.