Note 14 — SCENE I.
Reading edition
It was a common belief that a stuffed halcyon (i.e., kingfisher), suspended by the bill, showed from what quarter the wind blew. Shakespeare alludes to the superstition in Lear, ii. 2,—
"Renege, affirm, and turn their halcyon beaks With every gale and vary of their master."
Sir Thomas Browne, who discusses the subject in Vulgar Errors (iii. 10), says that "the eldest custom of hanging up these birds was founded upon a tradition that they would renew their feathers every year as though they were alive."