Recent findings suggest their death rituals included the great bustard. Some hold the skulls of wild sheep, but one specific burial has the breastbone, a great bustard with cut marks. Bones of great bustards found in the graves of the ancient people show cut marks and evidence of butchery. Still, there has been some debate among biologists about how long great bustards had lived in north Africa. The team hopes that the discovery showing the ancient human connection to great bustards spurs more conservation efforts to keep this population from going extinct.