We can all do this if we can’t remember words! by Christine Burgmer | Feb 25, 2017 | Allgemein | 0 comments Why do hummingbirds hum? It’s because they can’t remember the words! 😉 Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of followup comments via e-mail. You can also subscribe without commenting.