The natural diet of many birds includes insects, particularly Blackbirds, Robins and Thrushes. The protein they derive from this is essential to maintain their bodies in fully working order. Therefore, supplementing with dried mealworms can make a real difference. Mealworms provide exactly the right type of insect protein birds need to repair and maintain their muscle mass. They should be fed all year round, but particularly in winter when the cold weather kills off most insect life. In Spring, try soaking them in warm water for 20-30 minutes, as this will make them softer for fledglings to eat.