Translation:The owl screams.
I dont think any of these sentences make sense. It just a way to teach us a new word. Who would wash their phone anyway
He screams at us in the notifications every day to tell us to meet our daily goal
you should not focus on real life meanings like whether or not the owl technically screams in real life. The course is to teach you how to say things, you will see sentences like this a lot.
Owls screech in English. And Duo is pretty picky about translating into common English usage ... except here.