More and more natural habitat is disappearing, to help protect garden birds and other species you can make your garden bird-friendly. When it comes to garden design, food resources and nesting sites are the two most important factors that encourage birds to settle. Here you can find out which shrubs are important for birds, what they eat and how you can make your own bird food. We also tell you what you need to consider when building a bird house.
If birds feel at home in your garden, this has several advantages for the ecosystem, so it is always worthwhile to design a bird-friendly garden. This includes, for example, the planting of native plants, the avoidance of pesticides and gardens rich in structure. Diversity in the garden and a little "disorder" make it easier for birds to build their nests. They can find twigs, clay, pine needles, moss, dried grass cuttings, leaves and feathers.
Even if no species is saved from extinction by your own garden, the protection of typical garden birds is an important contribution to species conservation and the preservation of biodiversity. As beneficial animals, some bird species even offer you advantages when growing vegetables, because they eat aphids, caterpillars, larvae and maggots.
Hedges and shrubs serve native birds in summer and winter as a building site for their nests. They are also used as shelter in bad weather or as a protected place to sleep at night. The most suitable plants are those that offer shelter and nesting opportunities as well as bird food. This can be either the fruits and seeds of the plant directly or insects that are attracted by the flowers. Typical hedge birds include warblers, shrikes, robins, wrens, magpies and linnets.
If you decide to plant them in the garden, it is best to do so between September and March on a frost-free day. As far as hedge pruning is concerned, any radical pruning or stocking (i.e. cutting down to a few centimetres above the ground) should best not be done between 1 March and 30 September. Gentle shaping and maintenance pruning is, however, allowed during this period if you make sure that there are no nests in the hedge.
The food sources of native wild birds include plant seeds, insects and other invertebrates such as earthworms or snails. In terms of food intake, a distinction is made between grain eaters and soft food eaters. Grain eaters include tits, nuthatches, woodpeckers and finches. They prefer grain mixtures with sunflower seeds, hemp seeds and oat flakes. Soft feeders have a smaller beak and are satisfied with wild berries, fruit, ground nuts and very small seeds. They include, for example, wrens, treecreepers, robins and thrushes.
In spring, during the breeding season, protein-rich food (insects, larvae, caterpillars) is especially important for the offspring. In winter, on the other hand, it is mainly food with a high fat content (nuts and seeds, coconut fat or suet) that provides the birds with enough energy to maintain their body temperature. However, this does not mean that every bird species eats everything. Each bird species still has its own diet.
Not only plants that have the word bird in their name (rowan, chickweed) serve as food sources and nesting sites. Some native flowering plants are also suitable for attracting many insects that are on the menu of many birds. In addition to hedges and shrubs, perennials such as cornflowers, autumn asters, evening primroses, corn poppies and snapdragons are also suitable bird feeders for bird-friendly gardens. Sunflower seeds are picked directly from the plant by some bird species.
Although this idea is only a selection, there are some options for planting bird-friendly shrubs. In contrast, many cultivated flowering plants such as cultivated roses unfortunately bring little benefit to birds and other native animals. Therefore, non-native species such as cherry laurel or forsythia can be safely replaced among the many alternatives.
Providing bird food in the garden for native bird species creates an expanded food supply through supplementary feeding. However, this does not replace natural food sources. Feeders are a good way to observe birds and get to know typical garden birds. However, this does not solve the fundamental problem that natural habitat and thus feeding and protection opportunities are increasingly being lost. A wide range of natural food is always the most species-appropriate and best solution.
There are very different opinions among experts about how sensible bird feeding is throughout the year. This is because little research has been done on the effects. However, there is general agreement that bird feeders are helpful in winter when there is snow and ice. Which species benefit most from bird feeding and how it affects them is yet to be answered. As a garden owner, it is therefore important, when in doubt, not to offer high-fat and large seeds from April to July. Instead, you should increase the protein supply. In winter, on the other hand, you should offer fat food.
When it comes to bird food, it is better to mix it yourself, because it is not only cheaper, but usually also more nutritious for birds. Purchased bird food, especially the inexpensive varieties, often consists to a large extent of fillers (cereal seeds, millet or oat flakes). These are not bad in principle, but are only found in quality food in a proportion that the birds would actually eat. Another problem with purchased compound feed is that it sometimes contains ragweed seeds, which spread even further through the bird food. This plant is not native to Europe and can cause allergic reactions and asthma.
Basically, it is important to clean the feeding areas regularly. Droppings and leftover food should be removed daily. In addition, you should clean open feeders weekly with boiling water to reduce disease transmission between birds (especially important in summer!). You should always wear gloves, as birds can also transmit diseases to humans!
Although the amount eaten each day varies greatly from month to month, you should only spread as much as you know will be eaten in a day. To prevent mould and rat infestation, it is best to place the food under roofs or in feeding columns or silos.
Under no circumstances should birds be fed cheese, food scraps and other things containing salt, uncooked rice, shredded coconut or dried bread. Of course, spoiled food is also a taboo.
Native bird species that mainly eat insects often move to warmer areas during the cool months for this reason. So-called resident birds, which do not fly away for the winter, are then left with seeds from perennials. However, foraging on the ground is very difficult, especially in frost and snow. In addition, the shorter days leave less time for foraging in daylight. The energy from the food is used to keep warm in cold and wet weather as well as in winter. Therefore, the demand is particularly high in winter.
The term "bird house" immediately conjures up an image in everyone's mind. However, it is important to clearly differentiate between a bird feeder and a nesting box. Therefore, you should first decide what purpose your bird house should have. There cannot be a mixture of both, as they are built and placed differently. Typical nesting sites differ depending on the species: there are cavity breeders, niche breeders and free breeders. Accordingly, there are a variety of building instructions for birdhouses and nesting boxes designed for only one species. Birdhouses are not a panacea for bird protection, but they are a good step towards creating breeding and feeding places for birds.
Spruce, pine and fir wood are best suited for building a bird house as a nesting box. However, hardwoods such as hornbeam and alder are also a good choice. The board thickness should be 20 - 24 mm/0.8 - 0.9 in. The grain should run vertically so that rainwater can run off. The outside should be impregnated with a gentle wood preservative or linseed oil. When impregnating, pay special attention to the roof (roofing felt is not necessary). However, nesting boxes should only be hung up when the smell has disappeared.
It is best to hang them in autumn so that they can be used for roosting in winter and then directly as nesting sites in spring. The height at which they are hung depends on which birds you want to attract. A height of three to four metres is a good average and also quite cat-proof. Placing the homemade birdhouse near a hedge allows the birds to seek shelter quickly in case of danger (e.g. from cats). The size of the flight hole also determines which bird species will use the nest box. It is particularly important that the box can still be reached (and opened!) for cleaning.
Cleaning is done in October, either mechanically or, in case of heavy soiling, with soda lye and always wearing gloves. If you notice that all the nest boxes in the garden are being used, you can increase the number.
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Cover image: Photo by Vincent van Zalinge on Unsplash.
Emilie is studying agricultural sciences at the University of Hohenheim. She finds it fascinating how closely nutrition and health are connected and exciting which wild plants you can eat.
Learn MoreWhat can you do for birds in the garden?
To support birds in the garden, grow bird-friendly plants that provide food and shelter. In addition, you can hang birdhouses and nesting boxes and provide a water source so birds can drink and bathe.
Which plants are bird-friendly?
Bird-friendly plants provide food, shelter and nesting opportunities. Examples are berry bushes, yews, junipers, climbers like ivy and flowering perennials like coneflowers.
Which birds are helpful in the garden?
Helpful birds in the garden include tits, robins and sparrows, which eat insects and pests. Blackbirds and thrushes contribute to natural pest control by killing slugs and caterpillars. They help maintain the ecological balance in the garden and promote plant health.
Which perennials are suitable for birds?
In addition to hedges and shrubs, perennials such as cornflowers, autumn asters, evening primroses, corn poppies and snapdragons are also suitable bird feeders for bird-friendly gardens. Sunflower seeds are picked directly from the plant by some bird species.