Six herons standing in a stubble field
At the points of a hexagon:
English: Grey Heron (Ardea cinerea) (Photo credit: Wikipedia)
Flannel-suited businessmen
Members of the Board
Holding a Meeting?
Solemnly elegant in grey morning coats
Attentive gentlemen ushers
Waiting for the Bride?
Each bravely balanced on one ramrod leg
Wounded warriors in uniform
Still standing to attention?
Grey-hooded half-bowed heads
Rapt in meditation or prayer
Sisters of Mercy at a bedside?
Ghosts around a forgotten grave
Guarding the Star of David
Forever?
A landscape with six herons
Flashed on the window of the train
One frame from a movie
Retained on the retina
Eternally branded into the brain
Subliminally stirring symbols
Hieroglyphs
In an unknown language
Spoken only
In the deep, deep burrows
Of the subconscious:
Hexagonally hexing herons.
catterel 
The Heron is the “hern” Tennyson mentions in his poem “The Brook” .