Martin,
Hv to tell I use flash for bird photo long before but similar case after I seen a famous bird photogher use flash and the bird keep flushing around I tell myself stop using flash for bird photo anymore.
Before the launch of this "new" forum I propose to restrict some forum like birding report for HKBWS members only but finally the idea is not use not because of the idea itselfs just because it's too easy to be a member of HKBWS : Paid the fee then you are the member, and some people think it's purely the entrance fee of Mai Po Reserve.
We can't judge who can or cannot be a member of HKBWS but I agree to others please be careful to release the birding site detail in this forum. May try to use PM (private message) function to share some sensitive info with others.
Owen