Listen to the calls of the Northern Hawk Owl. https://www.google.com/search?q=sound%20northern%20hawk%20owl%20site%3Ayoutube.com&rlz=1C1GCEA_enUS1087US1088&oq=youtube&gs_lcrp=EgZjaHJvbWUqBwgAEAAYjwIyBwgAEAAYjwIyEwgBEC4YgwEYxwEYsQMY0QMYgAQyBggCEEUYQDINCAMQABiDARixAxiABDIGCAQQRRg8MgYIBRBFGDwyBggGEEUYPDIGCAcQRRg80gEIMTcwMmowajeoAgCwAgA&sourceid=chrome&ie=UTF-8&ved=2ahUKEwjHu8G05P2DAxUIHDQIHbeMCogQ2wF6BAgIEAE&ei=4BO1ZcfLLoi40PEPt5mqwAg#fpstate=ive&vld=cid:e43ba761,vid:AyApVI2xwg0,st:0