American Pikas scent-mark with their cheek glands, and also communicate with both long and short vocalizations. Short calls are uttered as alarms and to announce that they are departing or returning from foraging, and males perform a "song" during the breeding season. Learn more about the Ochotona princeps, more commonly known as an American Pika, in this easy-to-read species overview by the Smithsonian's National Museum of Natural History.