The Messenger is not the slickest documentary, but it includes beautiful slow - motion footage of birds in flight, and fascinating theories about the links between classical music and the avian songs that rang out before there were even human ears to hear them. (nationalpost.com)
As for why exactly taller folks should have an edge over the rest of us, researchers have proposed a few fascinating theories, several of them cited in The Atlantic. (businessinsider.com)
My first stint of «research» comprised of flicking through other reader's comments and very handily a fellow train buff posted a link denouncing the whole fascinating theory! (greatrail.com)