Size of the aviary is 11.73 inch long x 4.64 inch wide x 12.20 inch high; entrance hole: 1.37 inches in diameter. The birdhouse is made of 100% natural cedar wood. The use of high-quality materials and waterproof coatings helps to ensure that the birdhouse is durable, waterproof, resistant to fading and corrosion. This aviary can keep birds comfortable and safe in any climate and any area. A great gift for any bird or nature lover