What is "messenger bird"

Messenger \Mes"sen*ger\, n. [OE. messager, OF. messagier, F. messager. See Message.]

1. One who bears a message; the bearer of a verbal or written communication, notice, or invitation, from one person to another, or to a public body; specifically, an office servant who bears messages.

2. One who, or that which, foreshows, or foretells.

   Yon gray lines That fret the clouds are messengers of day.
   --Shak.

3. (Naut.) A hawser passed round the capstan, and having its two ends lashed together to form an endless rope or chain; -- formerly used for heaving in the cable.

4. (Law) A person appointed to perform certain ministerial duties under bankrupt and insolvent laws, such as to take charge of the estate of the bankrupt or insolvent.
   --Bouvier. Tomlins.

   Syn: Carrier; intelligencer; courier; harbinger; forerunner; precursor; herald.

   Messenger bird, the secretary bird, from its swiftness.