YREKA, Calif. (AP) -- The U.S. Fish and Wildlife Service is blaming a lack of water for a massive die-off of migrating birds at a wildlife refuge on the Northern California-Oregon border.
The San Francisco Chronicle reports (http://bit.ly/I0UxmD) that up to 20,000 birds have died at the Lower Klamath National Wildlife Refuge since February -- the worst die-off in the region in about a decade.
Fish and Wildlife spokesman Matthew Baun says only about half the refuge was flooded this year. That contributed to a higher concentration of the birds, increasing disease transmission.
The dead waterfall have been found to be suffering from avian cholera.
Environmentalists say the die-off shows water resources are not being properly managed.
Information from: San Francisco Chronicle, http://www.sfgate.com