Some years back my husband lived and worked on a farm that had a resident vet. They were standing watching the sunset one evening when the vet pointed to a huge black mass in the sky and said, "You know I have always wondered what those birds are! Do you know?"
My husband still smiles when he remembers his answer. "Yes, I do know. They are flying foxes going out to feed, navigating by the river."
After a long silence the vet bid him goodnight and wandered off to his house.
