/ Owls Content for UC Davis en /news/marijuana-farms-expose-spotted-owls-rat-poison-northwest-california <p>Wildlife species are being exposed to high levels of rat poison in northwest California, with illegal marijuana farms the most likely source point, according to a study led by the University of California, Davis, with the California Academy of Sciences.</p> <p><a href="http://www.ace-eco.org/vol13/iss1/art2/">The study</a>, released Jan. 11 in the journal <em>Avian Conservation and Ecology</em>, showed that seven of the 10 northern spotted owls collected tested positive for rat poison, while 40 percent of 84 barred owls collected also tested positive for the poison.&nbsp;</p> January 11, 2018 - 3:44pm Katherine E Kerlin /news/marijuana-farms-expose-spotted-owls-rat-poison-northwest-california