To Night

So thou art come again, old black-winged night,
  Like an huge bird, between us and the sun,
Hiding, with out-stretched form, the genial light;
  And still, beneath thine icy bosom's dun
And cloudy plumage, hatching fog-breathed blight
  And embryo storms, and crabbéd frosts, that shun
Day's warm caress. The owls from ivied loop
  Are shrieking homage, as thou cowerest high;
Like sable crow pausing in eager stoop
  On the dim world thou gluttest thy clouded eye,
Silently waiting latest time's fell whoop,
  When thou shalt quit thine eyrie in the sky,
    To pounce upon the world with eager claw,
And tomb time, death, and substance in thy maw.