The Magpies have fired the first shot in the build-up to the "Battle of the Bays" this weekend.
A billboard spotted in Napier which read "Go the Bay! Bay of Plenty, that is" has been covered in magpie "droppings" and the words "Hawke's Bay have replaced Bay of Plenty".
The billboard was part of a tongue-in-cheek marketing campaign run by the New Zealand Rugby Union as they looked to renew traditional rivalries in the provinces.
Earlier this month, a number of similar signs began appearing around the country. Hawke's Bay rugby commercial and marketing manager Jay Campbell said the campaign has created a real buzz around this year's cup.
"It has stirred some old rivalries and reminded people once again that the ITM Cup is the best provincial competition in the world."