Remember to measure for the perfect fit. The Bird Life Bird Perch for Medium & Large Birds gives your feathered friend a place to hang out， but it also helps to keep him healthy and flap happy. The textured nonslip surface helps to keep your bird safe， while also giving him a surface where he can naturally trim his beak and claws. The perch is also fortified with extra calcium. Its variable diameter helps to reduce foot stress and fatigue， keeping your birdie friend comfy. It’s easy to attach to a cage with the included washer and wingnut.