Flight delays can come from weather, maintenance and even surly passengers.
Apparently, you can now add pregnant turtles looking for a place to lay their eggs to that list.
On Friday, flights at John F. Kennedy International Airport were delayed by a group of the shelled animals, as they took to the tarmac and runways in search of the perfect spots to store their young.
The diamondback terrapin turtles are not a new problem for the airport.
Last year, 500 or so impeded flight schedules during the nesting season. The sandy soil surrounding the airport — just above the high-tide line — is apparently an ideal spot for egg-laying.