The Canary Islands have been important to the Spanish and Portuguese as a safe place and a provision station on their way to and from the Americas, Africa and India. We can conclude that this was of major influence regarding the export and importation of Spanish Game fowl.
Hereunder some information about the Canary Islands and ancient trade routes
(citation).......the conquest was not completed until 1496, when the conquest of Tenerife was completed and the Canaries were incorporated into the Castilian kingdom. Between 1448 and 1459, there was a crisis between Castile and Portugal over the control of the islands, when Maciot de Bethencourt sold the lordship of Lanzarote to Portugal's Prince Henry the Navigator, an action that was not accepted by the natives or the Castilian residents of the island, who initiated a revolt and expelled the Portuguese. After the conquest, the Spanish imposed a new economic model based on single-crop cultivation— first, sugar cane, then wine, an important trade item with England. In this era, the first institutions of government were founded.
The islands became a stopping point in the trade routes with America, Africa, and India, and the port of La Palma became one of the most important ports of the Spanish Empire. The town of Santa Cruz, on La Palma, became a stopping point for the Spanish conquerors, traders, and missionaries on their way to the New World. This trade brought great prosperity to certain social sectors of the islands....(end of citation)