Sacramento Refuge Complex Professional Review and Guide
"There are six refuges in the Sacramento National Wildlife Refuge Complex: Sacramento, Colusa, Delevan, Sutter, Butte Sink, and Sacramento River (Llano Seco Unit) national wildlife refuges. The two units described here have the best access. The Central Valley is considered to be the single most important wintering site for waterfowl in the Pacific Flyway. In winter 2 million ducks and a half million geese may be present in the valley, and in November and December, the thousands of Snow Geese moving across the sky is one of the most breathtaking sights in nature. Most of the world’s population of Ross’s Geese spend the winter in the Central Valley. Beavers, otters, and muskrats frequent the waterways. Specialty birds: Resident—White-faced Ibis, Wood Duck, Cinnamon Teal, White-tailed Kite, Nuttall’s Woodpecker, Yellow-billed Magpie, Tricolored Blackbird. Summer—Western Kingbird, Bullock’s Oriole. Winter—Greater White-fronted and Ross’s Geese; Eurasian Wigeon; Bald Eagle; Peregrine Falcon. This eTrail provides detailed information on birding strategies for this specific location, the specialty birds and other key birds you might see, directions to each birding spot, a detailed map, and helpful general information."