I notice this post this morning. Here is my view. Sorry to reply late.
1. Congretulation to Andy to photograph this rare HK bird. Please continue sharing with us on this forum.
2. Reporting to birdlines and forum is encouraged, but this is not compulsory. Birdwatchers decide how much he/she want to report.
3. I hope the society will be very happy to help camera-assisted birdwatchers (photographers) to learn more about birds. Be friendly to each other, all will win in the end.
HF Cheung