A RARE Orange Nyala Bull taken with Balla Balla Safaris A very unusual trophy I was Blessed enough to take on my recent hunt with Alan Bird of Balla Balla Safaris in the Limpopo Province of South Africa. Many thanks to Hermann Scheepes for the opportunity to hunt this amazing trophy. Notice the under developed testicles, the bull never produced any calves. In discussion with a verterinarian some time after the hunt he stated that more than 90% of the orange Nyala Bulls are sterile. Therefore the lack of testosterone is the cause of the freak.