The wood has a good sound insulation effect, the noise from the outside not disturb the nestlings in the birdhouse. Added safety extension from the entrance hole provides protection for young birds against predators.You don't have to worry about the chicks. Our bird houses have a 1.5 inch entrance hole, through this bird houses for outside you can attract desirable species to it such as , bird, Titmouse, Chickadees, etc. The standing pole is convenient for bird to stand on it and feed or guard chicks,the air vents allow for maximum air flow through wall and floor openings No assembly required, you receive a finished bird house, it comes with its own lanyard,which can be strung up in the garden to attract birds.There is clean-out door on the side of ,provide quick and effortless access for cleaning. Our bird house size:4.3 inch x 4.3 inch x 5.5 inch, it looks stylish and , can be painted, tinted and decorated in many different ways! Not only can it be used as a beautiful home decoration, but it is also the choice as a gift for kids, lovers, friends, and can make your kids fall in love with creation and gardening! Color: wood color Material: Wood Package Contents: 2 x Nest Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.