Nest Box - Wren | ↑ 25 Cm | Birdhouse | Pinewood And ZincNo garden should without a nesting box. This basic nesting box made from natural materials will give the Wren a good place to nest and will help conserve their population or help their reintroduction in a certain area. In the winter months the box is ideal for birds that need to take shelter from the elements. Place the nesting box on a tree or wall at a maximum height of 2 m (6. 6 ft.) in a well hidden spot between shrubbery. Not in direct sunlight