When we went on a nature walk this week, we brought along the camera. This time, we discovered eagles in the forest behind our house. This is one of three juvenile bald eagles that have taken up residence nearby. He's probably two or three years old. After three years of age, bald eagles develop their characteristic dark-and-white plumage.
If eagles are moving in, this would explain why the owls seem more upset (lots of hooting and screeching), plus the relative inactivity of the neighbourhood squirrels.