The world has fewer and fewer places where humans have yet to make their mark. As a result, insects and other animals lack nesting areas and shelters. But you can easily help out.
If you have a garden, do not clear away all of the leaves. Leave a few piles of them scattered around. Hedgehogs and many insects will feel right at home there. Old wood and tree stumps also make great homes for all sorts of insects.
Even if you do not have a big garden, you can still create a habitat for insects. The solution is called insect hotels. You can build them yourself.