Like ILC said, be patient, your new GCC is in a new home he is not familiar with and does not know you.....if your bird came from another home, he will be used to the sights and sounds of that home and will need to get used to yours, birds are not like puppies or kittens, you can't give them some food and scratch a bird behind the ears & expect them to jump in your lap for more.....it may take a few days or several weeks or even longer, but usually a couple of weeks brings them around.....