For Sale is a Full Page Print from the Illustrated London News April 18th 1896, called "The Training of Naval War Messengers : Carrier Pigeons Leaving a Battle-Ship off Plymouth." Artist - Fred T. Jane.
The Birds are released at a Prearranged hour from a box placed on the Deck, and the times of their flight are carefully taken. This method of Communication would be of the utmost use in case of War. The cost of it, however, has to be defrayed entirely by the Officers who are interested in it. It is Customary now to release Pigeons from every ship leaving Plymouth or Portsmouth so soon as she is well out in the Channel.