600 boyfriends later
Why do birds sing in the morning?
There are two parts to the question, of course: why do birds sing? And why do they sing in the morning more than at other times of day? The first I think we’ve had a pretty good idea about for a long time, and there are two main reasons: to attract mates, and to claim their territory. (…)
One of the oldest ideas is that they sing in the morning because it’s still too dark to be out and about finding food, so you might as well sing. That’s a pretty solid idea - but it doesn’t really explain why they sing more in the morning than in the evening, when the light also fades - or even in the middle of the night. Another theory is that the conditions early in the morning - often cool and with lower humidity than later in the day - might be particularly good for letting the sounds of the song carry further, though recent experiments suggest that actually the middle of the day might be the best time to sing if acoustic conditions are what’s important so I don’t think that’s a winning idea. The third and most interesting theory is that birds sing most in the morning because that’s when, most days, they’ve got spare energy to use up. (…)
Here in Africa there’s an additional complication we should consider: many female birds sing too.