My little whistler

Claire never ceases to amaze me. So a few months ago, she would sometimes inadvertently whistle. I don't think she knew she was doing it. She was just playing and happened to breathe through her mouth with her lips pursed. Well, she knows she's whistling now. I thought whistling was one of those things that a 6 year old tries and tries to do and finally gets it. But Claire just happened to stumble upon such skills. Now if I whistle, she'll whistle too. She'll walk around playing and whistling away.