Tracking 47 post‐spawned adult Atlantic salmon Salmo salar L. in a hydropower‐regulated river through autumn, winter and spring revealed that winter survival was 56% and 75% in two study years, respectively, with higher mortality of males than females (50% vs . 33% and 100% vs . 13%, respectively). Some kelts ( n = 7) displayed nondirected movements that were interpreted as a reconditioning period for an average of 9–17 days p...