Bluebird is a smart and subtle reminder of how exquisitely fragile the balance of our everyday lives are. A small, seemingly insignificant event, like stopping to admire a bluebird, can contribute to a tragedy whose ripple effects permanently mark the lives of many.
I know very little about indie rock band The National. One of the few things about The National that I do know is that my lack of knowledge about them makes me uncool. As in, if I knew more about The National, I would immediately be perceived as cooler. (I remember falling for this trap with The Decemberists, pretending to be "into them" in an effort to gain credibility. It didn't work and it's unlikely that I'll ever try again.)