Infographic for Week 1 of refrigerator brumation preparation: reduce the base temperature by 1°C per day until 19°C by day and 14°C by night, and reduce basking hours by 1 hour per day until 8 hours a day.

Temperature Reduction Weeks 1–6: A Step-by-Step Guide to Brumation Preparation

Preparing European tortoises for winter brumation is not a single event but a gradual process. This six-part guide walks through the usual four weeks of temperature reduction, followed by the resting and established-brumation period in the cold frame, before any transfer to a prepared brumation refrigerator.

Weeks 1–4 constitute the usual gradual temperature-reduction period. Weeks 5–6 concern resting and established brumation in the cold frame. Testudo graeca ibera from warmer southern habitats may require a slower, individual schedule.

The six weeks at a glance

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