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Winter whitening of Scottish Mountain hares (Lepus timidus scoticus) in relation to daylength, temperature and snow-lie

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Abstract

Changes in the coat colour of Scottish Mountain hares (Lepus timidus scoticus) were measured in the field. The rate of change varied between years, as did the extent to which the hares turned white. The data on these aspects were compared with changes in daylength and with variations in air temperature and the period of snow-lie.

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