John,
You may be interested to know that I also visited the area on Sunday. This was the first time I'd visited the area and I was impressed, especially at the numbers of waders using Sheung Yue River.
There were a couple of good birds that may interest you:
Black-naped Monarch - 1 heard next to the Sheung Yue River between Hang Tau and Tong Kung Leng (by the area with lots of waders)
Red-flanked Bluetail - 1 male in the same area
Scaly Thrush - 1 by the Sheung Yue River slightly further south (near Tsiu Keng)
Yellow-billed Grosbeak - 4 flyovers by Beas River Jockey Club
