How big is a flying fox anyway?

A lovely welcome at Madang

Having just read the guide book on Madang we were interested to see that there is a large population of flying foxes. We saw a whole load of them yesterday. More alarming is the statement "due to the flying foxes no planes can land or take off between 5 and 7 pm". We are currently in the airport lounge awaiting our flight which takes off at 6.00pm!!!!!!! Oh dear! Never mind it's not as if disasters have followed us around the world or anything!
En route to Wewak (flying foxes permitting)

Baggage reclaim Madang style

They're big you know!