The Avi One Preening Block is a great boredom buster. It allows your bird to safely preen, a natural behaviour, and distracts the bird from overpreening themselves. Birds may overpreen if they are bored or anxious. Avi One Bird Toys are designed to provide enrichment and entertainment for your avian pet. Providing environmental enrichment for your pet bird enhances their quality of life, instincts and overall health and well-being. Create different activities for your bird by introducing a variety of toys and accessories such as bells, mirrors, ladders and swinging perches.