
I'm hoping it's not Hitchcockian, but...
birds seem to be attracted to Offsprings #1&2.
When Offspring #1 lived in the dorm, a pair of robins built a nest in her window. She watched the entire process from nest building to the baby birds finally flying off. Here is one of many pictures she took:

Now an owl seems to have found Offspring #2. He took this awesome picture from the kitchen window of his apartment.
Perhaps I should ask Tippi Hedren when one should start to worry.