Let's put things into perspective now:
1) First of all, I don't think anyone here wants to hurt a bird or mother nature's work intentionally.
2) It's good that TS brings awareness to condemn such behavior, but if TS really feels so emotionally affected by those birders' behavior, shouldn't he kindly just walked over and tell it the those 3 fellows? Treat the problem at the source at that evidential time?
3) Technically speaking, is it possible to flash at 1/1 power at 8fps? And even if you can, won't it get over-exposed? I don't know, cos I don't have a 8fps machine gun and Quantum.
4) From my understanding, the sunbird nest is located near the entrance of MOG, I would assume that there will be lots of people movement there, why would the bird make a nest at such an exposed place? Too used to human presences? Even if no photographer shoots, bound to have some itchy hand people wanna have a touch and feel.
5) Most of us here do not see the actual behavior on that day, hence, we leave it to our imagination to argue here, the over-imagine ones will feel very strong about it, the under-imagine one will say 'what's the big deal', so I think some misunderstanding arises because of this.
Bottomline, don't fight each other, get your picture right and do the right thing.