My walk is brief, in the late afternoon at dusk, after a day away from home. Awake at 5:00 a.m., I left the house in a dark stillness after stopping in the frozen yard to feed Franci's pigs in her absence. Osa and Leona are happily heating each other, sleeping side by side in their shelter. They hear me sloshing cooked pumpkin and grain into their pen but don't bother to stir - it's that cold.