It seems you know your subject, Charl. Cannot find any fault with your explanations, thanks.
We do discuss the issue of last light, not after dinner though- they might have had a few to drink and that clouds judgements. and not when we see the quarry because the sight of it might also cloud judgement. I know my wildlife though, I have worked in the bush and in etosha N.P long enough to know how close and how to approach any animal.
The wounded oryx was lying of to one side and we nearly walked past it because me and the tracker lost the spoor and were searching for it again- I wasn't a very good tracker back then. To tell the truth I dont even know if the oryx was charging or just confused as to where to run. It might have been in a stupor/sleep and woke up confused, but i think it did charge with intent on bodily harm.
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