Feeding Birds in Winter: What to Offer and What to Avoid

Winter is the season when garden feeders matter most. Natural food becomes scarce, daylight hours for foraging are short, and small birds burn through fat reserves simply keeping warm. A well-stocked feeder can genuinely make the difference between a bird surviving a cold snap and not. But not every food is useful, and some common mistakes can do more harm than good.

The first principle is fat and calories. Birds need energy-dense food in cold weather, which means suet, seeds with high oil content, and mealworms. A feeder full of cheap filler grains is of little use to a hungry blue tit. If you can only do one thing, buy a good suet product and put it out consistently.

Best Foods for Cold Weather

Suet balls and suet pellets are excellent winter food. They are high in fat and are taken by a wide range of species, from tits and woodpeckers to robins and even blackcaps. Choose ones without a mesh net, since these can trap birds' feet and tongues, and buy loose or in a cage feeder instead. Suet cakes with added insects or berries are particularly popular.

Sunflower hearts are another top choice. They are shelled, so birds waste no energy cracking them open, and they appeal to almost everything. Black sunflower seeds are cheaper and nearly as good, though they leave more mess. Peanuts should only be offered from a proper mesh feeder, and never in whole form during the breeding season, as they can choke nestlings. In winter, good-quality peanuts are fine.

Mealworms, whether dried or live, are loved by robins, wrens, and pied wagtails. Soak dried ones in warm water before putting them out, especially in freezing weather, because dry mealworms can dehydrate birds when they need water most.

Foods to Avoid and Simple Hygiene

Never put out bread, and especially not mouldy bread. It fills birds up without giving them much nutrition, and mould can be genuinely dangerous. Cooked leftovers, salty snacks, and anything containing fat from a roasting tin should also stay out of the feeder. Salt is toxic to small birds, and soft fats can smear onto feathers and ruin their insulation.

Hygiene is critical in winter because birds congregate in larger numbers at feeders. Clean your feeders every couple of weeks with hot soapy water and allow them to dry fully before refilling. Move feeders occasionally to prevent a build-up of droppings and discarded husks underneath, which can spread disease. If you see a sick-looking bird at your feeder, take the feeders down for a fortnight to let the group disperse.

Water is easy to forget in winter. Birds still need to drink and bathe, and natural water is often frozen solid. Put out a shallow dish of fresh water each morning, and if it freezes, replace it rather than adding hot water to a frozen bowl, which can crack it. A few pebbles in the dish give birds a safe footing.

Finally, be consistent. Birds learn where food is and will return to a reliable source. If you start feeding in autumn, try to keep going through the coldest months. A feeder that suddenly empties in a hard frost is worse than no feeder at all.