Hello. I own two lovely cockatiels who are two years old and are very friendly towards me. I've figured how to get them used to new objects, by introducing it slowly, and it works! However, can I somehow help them be braver in general? I keep seeing people with their birds in different parts of the house, on the table or sofa, or interacting with different objects like plushies or silverware. Mine are terrified of going to new places and although I can slowly introduce and make them more comfortable in different parts of the house it is still very uncomfortable for them. They are scared when they see anything new. How can I help them become braver with new situations?