National trust 32mm nest box rustic birch for great tits & more this charming national trust nest box features a 32mm entrance hole, making it ideal for great tits, nuthatches, tree sparrows and similar-sized garden birds. Expertly designed to reflect natural nesting spaces, it helps counter habitat loss by providing a safe place for birds to raise their young. Each nest box is crafted from a genuine birch log, with its own unique grain and shape. The rain-shedding roof, solid walls and natural insulation make it a practical and wildlife-friendly addition to any garden. Ideal placement: fix to a tree trunk or sheltered wall 2 4 metres high, away from strong sunlight and prevailing winds. Face north or northeast for best results. Key features: * 32mm hole suitable for great tits, nuthatches, tree sparrows * made from a single birch log blends beautifully into the garden * official national trust wildlife product * encourages natural nesting behaviour and