The roar of a red deer stag carries an unmistakable message: the more powerful the roar, the stronger the stag. The sound is designed to carry in a forest, leaving both hinds and competitors in no doubt about the caller's physical superiority. To catch the action of the rut, Pierre stationed himself in Dyrehaven forest, an ancient deer park north of Copenhagen in Denmark. Going out at dawn, he planned to photograph the deer backlit against the rising sun. Just as the very first beams of sunshine lit up the grass, a stag emerged from below a huge oak tree to challenge a rival that had strayed too close. One set of bellowing was enough - the rival got the message, loud and clear, and vanished.
Nikon D3 + 500mm f4 lens; 1/640 sec at f6.3; ISO 800.
Dyrehaven Park, Klampenborg, Denmark