How to Attract Birds to Your Garden, Season After Season

Feeding at the right time of year, not all year round

Belgian bird protection organisations agree: feeding should be limited to the cold season, from mid-November to the end of March. Start gradually as temperatures drop, and taper off over seven to ten days once mild weather returns for good. During this window, the diet should consist almost entirely of seeds, black sunflower seed above all, along with mixes and millet; fat balls are only a top-up for spells of prolonged cold, not a daily staple. The right rhythm is a small top-up each morning, so birds can recover calories after a cold night.

Outside this window, it is better to hold off. In spring, aside from a late cold snap where a few mealworms can help out, artificial food offers little benefit. In summer, seed feeding is discouraged: parent birds need live insects, not seeds, to raise their chicks. Only a marked drought, which makes water and natural prey scarce, justifies keeping a water point going and, occasionally, a little food.

Nest boxes: which model, which orientation, which timing

The diameter of the entrance hole determines who can move in: 26 to 28 mm for the smaller tits, blue, coal, marsh or crested, 32 mm for the great tit, house sparrow or nuthatch. A hole that is too wide lets in predators and larger species.

Orientation matters as much as the model. Avoid the prevailing south-westerly wind, which drives rain and cold inside, as well as full afternoon sun, which can overheat a brood. The most effective compromise is an entrance facing east or south-east, sheltered from the wind and catching only the gentle morning sun. Mounting height should be between 1.5 and 3 metres, out of reach of cats, with the box tilted slightly forward so rain runs off.

The best time to put up a nest box is autumn, from November onward, not spring: tits scout out their nesting site early, and wrens already use boxes as a night shelter. Cleaning should happen between September and November, before this recolonisation: remove the old nest, which harbours parasites that survive from one season to the next.

Water, the need most often overlooked

Water is the one need birds have that never stops, summer and winter alike. A shallow basin, set up on a stand or on the ground, away from thick cover where a cat could lie in wait, is enough to bring in blackbirds, tits and robins to drink and bathe. The ideal depth stays shallow, two to five centimetres with a gentle slope towards one shallow edge, so the smallest birds can still stand.

Hygiene is not optional. Stagnant water fouled by droppings becomes a breeding ground for bacteria and parasites, particularly trichomonosis, which regularly wipes out greenfinches and chaffinches, and salmonellosis. The protective habit: rinse with hot water every week, without detergent, a little white vinegar is enough, and change the water daily in summer. Chemical cleaning products should be avoided altogether, as they strip the waterproof coating from feathers.

In winter, water freezes just when birds need it most to digest seeds. Break the ice morning and evening rather than adding salt or antifreeze, both toxic to them.

Planting to feed and shelter birds, without any human intervention

A garden that feeds itself is worth every feeder put together. Berry-bearing shrubs fruit in autumn and winter, just when insects have disappeared: elder, holly, viburnum, privet, honeysuckle and rose, whose hips last all winter, draw in blackbirds, thrushes and starlings from the first frosts onward. Yew, evergreen and dense, also offers year-round shelter; only its seed is toxic, the fleshy red aril around it is not.

Fruit trees do the same job, even without leaving all the fruit on the ground: a few windfalls under an apple, pear, plum or cherry tree provide a late-season feast. Hazel adds its nuts, prized by nuthatches and jays; a beech tree in a good mast year draws in chaffinches and bullfinches with its beech nuts.

These plantings also provide shelter: a dense hedge mixing hornbeam, beech and berry-bearing shrubs offers nesting sites protected from predators. Redcurrant and blackcurrant bushes, once the human harvest is done, still leave a few forgotten fruits behind.

Common species in the Belgian garden, and dangers to avoid

Four species dominate Belgian gardens all year round. Blue tits and great tits nest in cavities, readily take to a nest box, and become almost exclusively insectivorous from the moment their chicks hatch: a pair of great tits can bring up to 10,000 caterpillars to their brood over three weeks. The robin, solitary and territorial, hunts from a low perch. The blackbird combs lawns and borders for worms and fallen berries. The house sparrow nests in colonies in gaps in buildings; its numbers keep declining year after year in Wallonia, for lack of nooks in newer construction.

Three dangers threaten these visitors. Windows remain the leading direct cause of death, claiming hundreds of thousands of victims a year in Belgium; adhesive strips 2 cm wide every 10 cm on the outer face reduce the risk. Cat predation accounts for around 16% of mortality; keeping cats indoors during April to June and a Birdsafe collar (40-50% effective) do more good than a simple bell. Finally, pesticides cut insectivores’ prey by 50-70%: the simplest step for letting a garden feed its birds unaided.

The care sheets to read next

Every plant mentioned has its full sheet: watering, light, soil, pests and a month-by-month calendar.

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