http://www.heritagedaily.com/2015/10/culinary-habits-of-the-stonehenge-builders/108630
"Little evidence of plant-based meals were located at the site. Researchers found the burnt remains of nuts and wild fruits such as berries or crab apples, but no cooking greens or vegetables were located at what is described as a “meat fest”.
Speculation seem to turn almost into fact overnight. Those cattle from 'far away' may have found their way down there donkeys years before as different breeds were distributed from one 'county' to the other just like they are today when building a new herd, not like MPP was suggesting in his TV programme on this that they were selected purposely and came as far away as Scotland and I believe the Orkneys just to be feasted upon at Durrington.