We have had a family of owls living outside our window at night. One of them squawks, so although it looks big to us, it must be still a juvenile requesting food from mother. We have to close the window eventually, to get to sleep. We've tried to photograph them, but I don't know if they will turn out. They are living in an accidental ledges tucked away in a narrow vertical part of the building. We think they may be there in the day, hiding behind a big vertical pipe.