Additions to the list for today:
on the island
Asian Brown Flycatcher x1
Blue-and-white flycatcher x1 male (very nice but very shy, just briefly seen in early morning)
Hainan Blue Flycatcher x1 female (not seen by me, but Allen has some nice pics)
Chestnut-flanked White-eye x2 (seen by Meiling)
Red Turtle Dove x1
For Geoff's counting: the Ashy Minivets were certainly more than 10, and split in two groups (probably 15+), Pacific Swifts at least 2, and Narcissus Flycatchers 3, Blue Rock Thrush x2, Siberian Rubythroat x1 (female seen briefly), Yellow-browed Warbler x3, Brown Shrike x1 (heard briefly)
at sea
over 300 phalaropes in morning, 15 at lunch time in south peninsula, at least 25 on the way back
aside from the terns, which should include at least one common tern (reddish bill, not black trail to secondaries on my pictures), a group of 10 cattle egrets was going from HK island towards Po Toi in the afternoon. We also had a glimpse at three brownish looking birds, flushed by the boat, which flew just over it while we had just left Po Toi. May be small skuas, without visible tail? possibly juveniles or moulding birds.