Colusa National Wildlife Refuge/Sutter Buttes Annual event, chance to see large concentrations of waterfowl and other water birds winterizing in the Central Valley. More than 100,000 geese and ducks, over 80 species of birds. Bring lunch and something to drink, wear warm clothes and bring a raincoat. Meet at the Park & Ride , Hwy 20 and Pleasant Valley Rd 8am to carpool to site. 1.5 hr. drive each way. Please pre-register a week ahead.