Siting and Positioning:
Under eaves on the external walls of buildings. House Martins never nest inside buildings. Install on the sheltered side of the building. Against a light background or wooden boards. Martins tend to return to the same nesting site year after year. Consequently it may take some time before they colonise new areas. Once they have chosen a nesting site there are virtually no limits to the size of a colony of House Martin nests. Minimum height 2 m.
Can be used for years without cleaning. However, if possible it is advisable to inspect the nests frequently and to clean them if necessary.
Material: Bowl-shaped nest made of air-permeable wood-concrete and a backing board made of exterior grade, formaldehyde-free chipboard to prevent warping.