Population of rare Stone's sheep 20% smaller than previously thought

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The already-rare Stone’s sheep of the Yukon is 20 per cent less common than previously thought, according to new research by biologists. The study examined 123 different DNA markers in approximately 2,800 thinhorn sheep in British Columbia and the Yukon, with the goal of mapping population boundaries. Results show significant overestimation of certain subspecies of thinhorn sheep, like Stone’s sheep, due to misclassification.