Barry Cornwall (pseudonym of Bryan Waller Procter) once said...
In the hollow tree, in the old gray tower,
The spectral Owl doth dwell;
Dull, hated, despised, in the sunshine hour,
But at the dusk--he's abroad and well!
Not a bird of the forest e'er mates with him--
All mock him outright, by day:
But at night, when the woods grow still and dim,
The boldest will shrink away!
O, when the night falls, and roosts the fowl,
Then, then, is the reign of the Horned Owl!