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The movements of meadow voles in a field population were studied using radiotelemetry during fall and winter. The voles changed from a dispersed, solitary dispersion pattern during early autumn to social clusters with communal nesting during winter. This shift occurred as the daily median temperature approached freezing. Movement was inhibited and localized during winter, except under snow when the voles exhibited a freedom of movement not experienced during other times of the year. Overwinter management of meadow voles in orchard habitats is discussed in view of these findings.