House Martins are the birds with white rumps that build mud nests on the eaves of buildings often in colonies averaging five nests. They will readily use artificial nests and this may encourage other birds to nest nearby.These nests should be sited underneath the eaves of your house or outbuildings and are supplied as twin boxes to further increase success Dimensions:Height: 16.5cm (6.5ins) Width: 38cm (15.0ins) Depth: 12cm (4.7ins) Nest Diameter: 2 x 15cm (2 x 5.9ins)
