There's more to owl sounds than just “hoo, hoo”! Each owl species has its own unique calls — sometimes even more than one. Today, let’s dive into the fascinating sounds that Newton, our ambassador Eastern Screech-Owl will try and demonstrate. Eastern Screech-Owls have two main calls: A descending, almost horse-like whinny, which they use to defend their territories or an extended trill on a single pitch, which is used to attract mates and stay in touch with family members. (This is what you are