Redwings and fieldfares are winter migrants from Scandinavia whose welfare during UK winters depends on berry availability and hard-weather food access.
Redwings and fieldfares in hard winters without accessible berry crops face rapid starvation - they must feed almost continuously in cold weather to maintain body temperature. Garden apples, windfall fruit, and supplementary feeding can save individual birds during winter cold spells. Planting berry-producing shrubs provides long-term winter food infrastructure.