On several early morning runs this past week, I've noticed the familiar call of the mourning dove. It took me back to my only serious bird-watching of my life, in 5th and 6th grade a very long time ago. I remember little of that time except for the call of this bird. And, some 50+ years later and 600 miles from where I was raised, the call remained identical.
It struck me how amazing the genetic material is. Over gazillions of birds, thousands of generations and huge distances, this species' call is identical to that I recall from my youth. Indeed, it's identical for centuries.
It's amazing to me and made for much reflection.
WITAWIR (What I think about while I run).
Persevere. The mourning doves sure have.