Montana Fish, Wildlife & Parks released a new population of bighorn sheep into the Tendoy Mountains on Friday morning near Lima. The reintroduction of bighorns to their historic range was sponsored by various conservation groups, including the Montana Wild Sheep Foundation and the national Wild Sheep Foundation. The previous Tendoy bighorn population was eliminated starting in 2015 because the population was struggling with disease.
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The last Tendoy bighorn herd was introduced in the 1980s, and an outbreak of a pneumonia-causing pathogen caused a mass die-off in the 1990s from which the herd never recovered.