Flashnest has introduced a nice flash version animated twitter bird for free. You have to register for download the twitter bird. It can be resize, available with four different colors and its only 7kb each. The best part about this twitter bird button is that you don’t have to open the FLA to specify your “Twitter Link”. You can do this through the embedding code. It is explained in the documentation file. If you would like to change the twitter bird’s color, then open the FLA file that is included with the download file.