Are these birds of prey mistakenly picking these smouldering sticks mistaking them for small animals and once they realise their mistakes drop them in another part of the bush starting a fresh forest fire? Or could it be intentional?

I think I would go with what Dr. Robert said. I think its just their way of making more prey for themselves. That is really a tactful act exhibited by mere birds.

It is only amazing what they do but when man suffers it more, it is rather too appalling. What can humans do there just birds of the air- no control over what they do.