Designed for birdwatching: the nest is made of clear acrylic and is highly transparent for close up photography. Our clear bird nests allow you to observe your favourite birds from your kitchen, workplace or bedroom window. Dry and ventilated: The holes will prevent your bird nest from attacking mould and mildew. As a result, food will not spoil and you will not need to clean the food compartment as often. The sink is the ideal place to drink. Easy to clean: the removable food compartments are easy to clean and replenish without having to loosen the suction cups. You can also quickly wipe the surface with a damp towel to remove any dirt or water marks. And we've also cut drainage holes in the tray and main feeder to prevent mould and mildew growth. Great design: the feeder is not squirrel-proof. Even pets like to watch birds visit and feed: you can mount it outside a high window, away from nearby branches, making it difficult for squirrels to get in. Thanks to the innovative suction design, few people will be able to steal the seeds. Size: The durable and lightweight window birdhouse is 11 x 5 x 4 inches high. Can be installed in any window.