Hi Loi, nice heard of elephants, always difficult to get clear heads in the back of a group like this.
Not sure about the blue, is this a carry over from the kite? Looks like you got more tonal range in this image compared to the previous ones, and good to see there is detail & tone in the tusks. I don't mind the crop as presented, but if it is a crop then perhaps having a little more room all round might be nice? Perhaps a little more IDSO, but again, since this was taken you have come a long way.

Nice touch having the egrets, just adds that little bit of extra, to the image. Personally I wouldn't have split the sharpening and I might have left the rear ones, but I do wonder if a tad more USM wouldn't hurt, WDYT? Keep that middle figure to 0.3.
To me, there appears to be a very slight halo running along the back of the elephants where it touches the sky, perhaps have a look when you have a minute.
You will love Botswana, especially where you are going, just make sure you say hi to Lizzie for me.
TFS
Steve