deer thingy??

went to lackford lake today (again) wich is rapidly turning into a favourite haunt of mine!
As myself and velmie were making our way back to the car discusing how we hadnt got to many good blips we come acroos 2 of these guys... munching at the weeds next to a stream.realy dont kno what it is tho so if any one can shed some light on it then that would be great!!!