HFCheung

Here is my original guess, and I don't have HK Avifauna at hand and so I have not checked.

1. Arctic
2. Pale-legged/Sakhalin
3. Dusky
4. Greenish
5. Yellow-browed
6. Narcissus
7. Yellow-rumped
8. Mugimaki
9. Asian Brown
10. Grey-streaked
11. Chinese Sparrowhawk

HF Cheung