Avian botulism kills 40,000 birds, threatens millions more in Klamath Refuge
The worst outbreak of avian botulism in 40 years at the Klamath Basin National Wildlife Refuge has killed more than 40,000 waterfowl and shorebirds, biologists say. The outbreak is a product of sustained hot weather, warm water, receding wetlands from lack of freshwater and crowding.
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