Feeding is straightforward but worth getting right. Meaty cat or dog food, or https://www.gardenwildlife.com a specialist hedgehog food, is a better choice than bread and milk, which can cause digestive upset. A shallow dish of fresh water left out overnight is just as useful as food, particularly during dry spells in summer.
Timing across the season is worth planning for deliberately, since gaps in flowering leave pollinators with nothing to forage on for weeks at a stretch. Leaving seed heads standing rather than cutting borders back in autumn also gives finches and other seed-eating birds a natural food source right through the colder months.
Bees and other pollinating insects rely on gardens for a large share of their food, especially in built-up areas where wildflower meadows are scarce. A garden that offers flowers from early spring right through to autumn does far more for pollinators than one with a single showy burst of colour in June.
Design details matter more than they might appear to. Good insect houses combine hollow stems, such as bamboo or reed, with drilled wood blocks offering a range of hole diameters, roughly 2 to 10mm, since different species use different sized cavities. Natural, untreated materials are preferable to anything varnished or chemically treated.
Food choice should shift with the seasons. High-fat foods such as fat balls and suet blocks suit the colder months, when birds need extra energy to maintain body heat. During the breeding season, softer foods and mealworms are more useful, since adult birds feed these to chicks that cannot yet manage tougher foods. Sunflower hearts work well year round and avoid the mess of husks left by whole sunflower seeds.
Fresh water for drinking and bathing rounds out a decent set-up. Gardeners building out their feeding station for the first time typically start with a good spread of bird feeders to cover the different food types birds look for.