The WoodStone Build in Hidden Swift Box is constructed from tough long-lasting WoodStone material. It is designed to be incorporated into the wall and then covered with building materials that form the building`s outer facade.
An entrance hole of at least three centimetres tall and six centimetres wide should be left for swifts. By leaving a slightly larger entrance space of around 3.5cm this will encourage other species such as house sparrows to occupy the nest. Leaving most of the entrance exposed and siting the box below five metres will encourage robins, wagtails and black redstarts to occupy the nest box.
For swifts the nest box should be sited at least five metres high and not south facing.