“When a group of people sing together, we make up a chorus. When birds do, it's more like a whole symphony orchestra.” SingingOrchestraBirdsChorusPage 183Laura EricksonThe Bird Watching Answer Book Book:The Bird Watching Answer Book: Everything You Need to Know to Enjoy Birds in Your Backyard and Beyond Source: The Bird Watching Answer Book: Everything You Need to Know to Enjoy Birds in Your Backyard and Beyond