Will the Aviator harness be too heavy for my small bird?

The smaller Aviator Harnesses weigh between 6 and 10 grams. This is similar to a human wearing a 15 pound (7 kilo) back pack. It probably does feel a little heavy at first but not enough to cause your bird to be less active. The larger sizes weigh up to 25 grams which is not even noticed on the larger birds.

One of the problems with clipping wings is that it stops the development of many parts of the brain and body. The cerebellum in the back of the brain makes up 25% of the bird's brain and is responsible for coordination. In humans the cerebellum is only 10% of the brain so you can see that coordination is much more important to a bird than a human. The cerebellum can only be properly developed by flying. This is one of the primary reasons birds become more aggressive as they get older.

Your bird will get bigger and stronger, but like humans, they can only do that with exercise and experience, it is not possible for a bird to develop properly and completely without full flight. As your bird flies more and more using their Aviator harness, it will feel less heavy.