Small Red Aviator Harness for birds weighing between 190 - 425 grams or 6.7 - 15 oz: Small to medium-sized Amazon parrots (blue fronted, lilac crowns, orange winged), small african grey parrots (timneh, small congo greys), yellow collared macaws, small cockatoos (goffins, lesser sulfur, major mitchell, galah), large parakeets (alexandrines, pionus); small eclectuses * ESCAPE-PROOF! With other brands of harnesses, your bird can easily remove the leash and harness. The Aviator Harness keeps your pet safe and secure. * Self-adjusting leash: Automatically adjusts from the chest to the back as the bird climbs and flies. Fewer pressure contact points on bird. * The strong steel slides have been powder-coated black to make them unattractive as toys. However, we have not heard of any bird yet that was able to break it. * Easiest to install - one piece design - No buckles or clips.