Check out a variety of photos from Colusa NWR. Also view other refuges' galleries: Sacramento, Delevan, Sutter, and Sacramento River. For other photos, videos, and more check out the Complex's facebook page.
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Often small groups of northern shovelers bring food to the surface by swimming rapidly in a circle while swinging their bills side to side. They strain aquatic vegetation, plankton, and tiny invertebrates through the comblike edges of their shovel-shaped bill.