Another nice thing about bicycling is that it gets you outside, in the environment. I feel more attuned to the weather, the change of seasons. Spring is trying to force its way into the Seattle area, though Winter is still winning at this point. The songbirds, however, have a schedule to meet and are doing whatever it is they do.
They sing, sometimes loudly, to each other and the world at large. I assume they're calling for mates, marking out territorial boundaries. They have superimposed a kind of bird grid over our urban environment. Of course, from their perspective, we have imposed a kind of people grid over their avian environment. The two grids can coexist, as long as one of them refrains from filling up the other with noxious gases and chemicals.
Seattle Audubon Society