Bushbuck or Kéwel (Tragelaphus scriptus)

In the background:

Gemsboks (Oryx gazella gazella)
Marabou Stork (Leptoptilos crumeniferus)
Wild Sacred Ibis (Threskiornis aethiopicus)
Wild Numida meleagris coronata (Guinea Fowl - South African subspecies)

Looks more like an Imbabala to me (Tragelaphus sylvaticus), especially considering that this is South Africa.

That's also what I thought! But apparently they keep Kewels (Tragelaphus scriptus). I spoke to a zookeeper and that's what I was told. According to ISIS this is correct. This guy also told me they keep Imbabalas as well (in a different enclosure) though I wasn't able to see them.

Very nice to keep both species! Only one other zoo in the world with either one of them.

Which one is it?

Gladys Porter in Brownsville, Texas.