Sea-ward, white gleaming thro' the busy scud  
   With arching Wings, the sea-mew o'er my head 
   Posts on, as bent on speed, now passaging 
   Edges the stiffer Breeze, now, yielding, drifts, 
   Now floats upon the air, and sends from far 
   A wildly-wailing Note.
Samuel Taylor Coleridge
http://www.poemhunter.com/poem/sea-ward-white-gleaming-thro-the-busy-scud-fragm/