Fallow Buck.

The Fallow buck's "call" during the rut is very different from that of the Red stag. Generally, the rut has been very low key in Bushy Park this year. This afternoon I followed this buck around for a while, he was doing a fair amount of grunting, and almost languidly following the does around.
Last year, almost to the day I was with Max Ellis in the park when he took a video of two Fallow buck during the rut - you can see it HERE.