The National Trust Aspen Larch 28mm Nest Box is an elegantly designed product that will make a wonderful addition to any garden or outdoor space. With a classic nest box design, it has a green sloping edged roof and a 28mm hole that offers the chance for many visits from Tree Sparrows, Blue Tits, Coal Tits, Great Tits and Crested Tits. Around October, after breeding season, the nest box can be opened at the front for easy cleaning. A clean nest box will help attract birds who are seeking a shelter during the colder winter months.