Five provincial airports have been told to reduce the risk of bird strikes.
The Civil Aviation Authority (CAA) has urged Kerikeri, Whakatane, Napier, Palmerston North and Chathams Islands airports to take action, because of high bird numbers.
The CAA says there are practical ways of dealing with the aviation menace, including shooting the birds and removing their food source.
The Authority says birds at airports range in size from tiny sparrows to large Canada Geese.
On Wednesday, bird strike was blamed for engine trouble on an Air New Zealand passenger jet, which landed safely at Wellington airport despite one engine on the Boeing 737 being shut down.