In any case, what this practice has in common with Deep Listening is that observing birds requires you quite literally to do nothing. It’s sort of the opposite of looking something up online. You can’t really look for birds. You can’t make a bird come out and identify itself to you. All you can do is walk and wait until you hear something, and then stand motionless under a tree trying to use your animal senses to figure out where and what it is. In my experience, time kind of stops.