Dawn Chorus

I've been awake more often in the early hours lately than I'd like, and there is that moment in the pre-dawn when, out of the silence, one bird peeps.  Just one, and then an answer, or perhaps another kind altogether chirrups.  Then, quicker than my bemuddled brain can track, there are dozens of different voices, and that tentative sleepy tone is gone and, for them, the day has begun.  And In appreciation for the company they've been giving me, here's A Capella Science's More Than Birds: