Despite a 2016 Blaine County ordinance restricting the planting of noxious plants, including exotic yew, a bull moose was found dead in the backyard of a residence on Tuesday January 17, 2023, after eating the toxic plant north of Ketchum. A field necropsy was conducted by a conservation officer who confirmed that the moose had consumed yew found in the backyard of the home. The officer also noted that he found the overall body condition of the moose, as measured by the amount of body fat, was good.

During the winter of 2021 – 2022 over 20 elk died as a result of eating ornamental yew throughout the Wood River Valley.

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