The main flock of shovellers were not far from the biggest group of tufites. Numbers had again roughly doubled since my previous visit to West Park. There were about twenty swimming together as well as the few stand-offish ones. Much of the time, the shovellers were engaging in the activity which gives them their name: swimming in tight circles with their beaks just below the surface of the water, straining it for the small particles of whatever it is they eat.