Pelicans return to the refuge in early spring.
For birdwatchers on the refuge, a bright red head signals spring has arrived. These Redheads are only a fleeting moment though, stopping to fuel up at the refuge before heading on to their breeding grounds in North Dakota and Canada.
Spring is a great time to see the myriad of warblers that pass through the refuge. They stop here to refuel and rest on their migrational journey.
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A year round resident on the refuge however numbers soar during the winter. Look below locks and dams where the river is not frozen. Aerial displays and pair bonding are best viewed from January through March. In winter, over 1,000 bald eagles grab fish,ducks or coots in the open water.