I heard one hooting outside my open bedroom window last night at 4 am. Woke me up. After 20 minutes, another one joined in the conversation. A mate. They will lay their eggs soon, in winter.
Remarkable large birds, top predators, and adaptable to almost every habitat from urban parks to deserts. They are found everywhere in the US, Canada, Central America, and in parts of South America.
They will eat anything that moves: house cats, snakes, skunks, rats, porcupines, mice, fish, muskrats, possums, crows, gulls, ducks, even smaller owls - but their favorite food seems to be rabbits.
I rarely see them, but I hear them regularly. They are non-migratory and early maters and nesters, laying eggs in January snowstorms.
Their hooting is mostly territorial in purpose.
You can read about them here and here.
This is fun: The Owls of NYC