Longhorn cattle are not only emblematic of Texas, they are also the most visually spectacular cows in the world. On location on the abandoned film set of “There Will Be Blood”, we tried different combinations with a few prize-winning cows. But the reality was very clear - they are not camera friendly. In fact, they are considerably less compliant than the elephants of Amboseli, Kenya.

To achieve this composition was a real test of the team’s patience and all my thanks go to Ryan Thompson and his fellow cowboys, who worked with great skill to engineer this frame. I was doubly appreciative, as lying on the old rail sleepers is not the most comfortable way to spend a morning. It was critical that the bull was facing me and there were no tension points with his fantastic horns.

Rail roads were so integral to the great push West as indeed were wagons and it struck me that they could complement each other outside a station. There is no real need for people to be in the image - there is enough there and the composition works. This is a personal favourite of mine.