John, the geese photo I posted here was the best I got; the 2nd one was a partial blow-up of the 1st. All my photo gears had been packed & I was not prepared when our coach suddenly passed through this flock of geese on our way to the train station to complete the trip. The light at that time was the best in my 4-day stay; most of the time it was misty! Besides these geese, I also saw quite a no. of Greylag Goose flying in the mist but not many Bean Goose(maybe too far away).
Finally, I love to see these geese & other birds you mentioned in HK. In particular, I believe everyone will be very happy if a Tundra Swan will turn up here!
Paul