The common pill woodlouse can conglobate (roll into a ball). The woodlice move about in the open but prefer areas of high humidity and thus frequently are found under leaf litter or logs. Under normal conditions, the common pill woodlouse moves slowly through its habitat and becomes more active in dry air when it actively seeks a more humid area. Studies of daily, foraging movements reveal that individuals travel an average of 43 ft (13 m) each day in the summer but only 22 ft (6.6 m) a day in the winter. In cold months, individuals have been found as deep as 10 in (25 cm) beneath the soil surface.
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