NEW YORK (Reuters) - Flights at John F Kennedy International Airport were delayed shortly on Wednesday when about 150 diamondback terrapin turtles were spotted crossing a runway, authorities said. The reptiles were trying to get to the other side of the runway to lay eggs on the sandy shores of the Jamaica Bay Wildlife Refuge, which borders the airport. Ron Marsico, a spokesman for the Port Authority said, Flight delays attributed to turtles were minor, about 15 minutes or so. Naturalists said the 185-acre Jamaica Bay may be the diamondbacks most popular breeding ground in North America.