Late to post: but last Sunday (24 Feb), I saw a Peregrine falcon fly low over Kwun Yam Wan, calling loudly. Not sure if only my second Peregine on Cheung Chau.

Out sw Cheung Chau today, and not too much about: three or four thrushes I coudn't identify; just one Pallas's Warbler, didn't noticed any Yellow-broweds (large prroportion having died during the cold spell?).