Oryx + Friends

Male and female oryx (Gemsbok) with a springbok.
This is a good illustration of the difference between male and female oryx (other than the obvious, which can't be seen at any distance).
The male, left, has long straight horns. The female, right, had wider-set, shorter horns that curve at the top.

Etosha, Namibia, salt pan
2014:05:23

D800
80-400mm @ 260mm
1/320 sec, f/20
Mode: Av
Metering: Spot
ISO: 320
White balance: Auto