General description In recent decades, the population of house sparrows has dramatically declined. Our House Sparrow Nest Box is designed to help combat this issue by providing ideal nesting sites for these birds. The unique design allows multiple boxes to be joined together in various configurations, and they can also be added to our Sparrow Terrace for expanding colonies. Technical specifications Material: Exterior Grade Plywood Construction: Panels stapled together with surface sunk staples Finish: Non-toxic water-based stain and preservative Dimensions: Height 24 cm, Width 13 cm, Depth 17 cm Weight: 0.8 kg Entrance hole diameter: 32 mm Installation Features a concealed keyhole at the back for easy fitting with a screwdriver Fixed roof allows installation right up at the eaves, where sparrows prefer to nest Usage Slide-out floor with drainage holes for easy cleaning at the end of the nesting season Designed specifically for house sparrows, helping to support their declining