This attractive nest is perfect for house martins as its similar in style to the nests they make for themselves made from a stone resin fixed to a wooden board it can be attached to any outside wall space to help attract more feathered friends to your garden if buying more than one place them approx 1m apart for the maximum comfort of the house martins made from a stone resin fixed to a wooden board can be attached to any outside wall space perfect for house martins similar in styl