Opening diameter: 6cm/ 2.4'',coconut shell diameter: 13cm/5.1'' Perfect hollow space for placing treats and bird seeds Fun hideaway for your pet to nest & climb in and out of Made from a completely natural coconut husk, making this a safe, sustainable and non-toxic environment for small pet. Comfort toys and sleeping tests can alleviate a birds stress and provide them with a sense of security Features Fun hideaway for your bird to nest & climb in and out of. Your bird will benefit from hours of mental stimulation and rugged physical play. The bird house has an opening diameter of 2.4 inch and the coconut shell diameter is about 5.1 inches. Perfect hollow space for placing treats and bird seeds. Pet parakeets, finch, canary will flock to this bird house. Made from a completely natural coconut husk, making this a safe, sustainable and non-toxic environment for small pet. Please NOTE: As these are natural products, the measurement may vary slightly. Included 1 x Pet House