I would be willing to bet you are mixing up the two species. The Sambar with the antlers is the males and without are the females. I was running into the same problem at first. The Bharals kind of look the same only they are grey and their antlers curve down like ram horns.
Ah I see, that could be it, I wondered if the non antlers were females but was in the Bharal territory at night and any herds I could see were I guess Sambar, on the map it looks like they don't have any horns the Bharal.
Thank you for pointing that out, I'll go back there and look some more.