Every morning I sit on my porch with my sketchbook, bird books and coffee, surrounded by trees which I can see, and birds, which I can't. The sound of them is everywhere. It's an enigmatic pleasure for me to draw birds from pictures of birds while listening to real birds. The act of making an image seems to put me in sync with them on some level.
I occasionally hear cars, cows and trains, but am not inclined to draw them.