In response to Scott Ramos' post, I heard a squeaky sound from one of dueting owls in one of parks along the Columbia. It's ancient history (2010) but if interested, open this link
https://youtu.be/Oe950J0XIM8 <
https://youtu.be/Oe950J0XIM8> and go to 58:58 on timeline.
Al Wagar
Seattle