Northern Shovelers. Villiage Creek Drying Beds, Arlington, TX. Canon 100-400mm f/4.5-5.6 L IS USM at 160mm. 1/1000 sec. f/7.1. ISO 400. The ducks in the centre between the three colorful males (and above) are also males. Fall coloring. Different eye coloring, beak color and back feather pattern than females such as seen in the lower left and lower right.