The aim is for the same target this year - although the head of cattle has gone up from 90-plus to 138, and the grazing season has been extended to four months (from 40 days last year).

BBC: Modern cowboy keeps cattle safe

It began back in 1966, when Colorado-born mine magnate Courtland Parfet bought the ranch, an area of grassland mainly for grazing beef cattle.

BBC: The rhino wars of central Kenya