I recall a few studies from colleage and an old friend is currently studying non-human vergence tracking sexual dimorphism. I'll take a look, but here's a quick Google search on the relevant terms:

http://tinyurl.com/yhbwjde

One of the interesting results is that women are better at short-range vergence skills (e.g. obscured fast facial recognition & foreground-background discrimination) while men are better overall and absolutely excel at long range pathing prediction.