Made from resin with wooden backing, these house martin nests are a simple yet effective way of welcoming these beautiful birds to your garden, as well as providing them with shelter from the elements . Best placed up against the eaves of a building to help protect any residents from predators, the resin bowl is natural in appearance & features a pre-drilled drainage hole. The wooden backing board features two metal hoops that can be hooked over nails or screws for easy installation. * Resin construction with wooden top & back * Drainage hole in base * Hanging hoops