Sparrows like to nest in colonies so this next box is the perfect home for them. Our Sparrow Nest Box has a charming natural woodland roof and is constructed from robust timbers. The holes are 3cm (30mm) in diameter. The box is also features a hinged roof for easy access and cleaning which can be locked shut with the two screws included. Measures 46cm x 22cm x 22cm * Helps protect sparrows from predators and weather * Great for enticing new birds to roost * Creates a social nesting environment * Wooden nesting colony * Natural wood roof