This photographer decided that he couldn’t take the time to set up and open his tripod. So he’s using his tripod as a monopod. It might work because he’s also leaning against the fence.
His tripod is an old aluminum Manfrotto tripod from the 1970s (meaning it’s very heavy). I have the same one, but without the foam around the legs. There is no model number on mine, but they look identical.
Using A Tripod As A Monopod
Camera: Canon 7D ISO 200 and 1/160
Lens: Canon 70-200L-IS f/4 @97mm and f/6.3
Processed with Darktable 2.0.5: http://www.darktable.org/