Polly’s Pastels Twister Perch is a veterinarian designed variable size perch which will trim your bird’s nail and beak naturally while promoting healthier feet and leg muscles. Because birds spend most of their lives on their feet, problems can develop if they’re confined to perches of a single thickness and shape. The Twister Perch eliminates painful foot pressure points, providing a variety of contact points every time the bird moves. Imitates natural perches. Trims bird’s nails – just as nature intended.