I just sang the birds the most random song ever, the lyrics were complete gibberish, yet I have never seen Cossie head-bob so hard to a song in her life. And she did that crazy budgie "head flipping" thing as well. The little guys definitely appreciated the crazy energy I put into the song, and probably just enjoyed having some head-bobbing fun. The girlies loved it, but Stormy was looking a bit concerned. He's the guy that keeps the girlies in check, since they can be pretty crazy, and he's very laid-back. Has anyone else sang a gibberish song to their birds? I think I'm going to have to incorporate into our daily play sessions, since the girls seem to love it so much.