Northern Mockingbirds are a medium-sized song bird that are mostly grey except for a white band on the wing that is most visible when they fly. Mockingbirds are most well known for their ability to "mock" or mimic noises they hear most often. They will use this to keep themselves and their territories safe, mimicking birds that are bigger and more aggressive, to keep others away. With urbanization, these birds have even picked up sounds like car alarms and have been heard mimicking them.