New research reveals that several species, including the northern spotted owl, are succumbing to rat poison from thousands of "unpermitted private marijuana grow sites" in the northwestern California counties of Humboldt, Mendocino and Del Norte.
It's the contamination of the owls' primary food source — mice and rats, which, like humans, are attracted to the aromatic crop — that has been the animals' undoing: Scientists from the University of California, Davis, and the California Academy of Sciences have detected traces of anticoagulant rodenticide in seven of the 10 northern spotted owl carcasses they collected, according to a study published today (Jan. 11) in the journal Avian Conservation and Ecology.
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