Whenever we have a loaf of bread which has started to go dry, we usually take it to work to feed to the ducks and geese by the lake. We had the dry crusts from the ends of the loaf and took them with us today.

Alongside the usual ducks, there were a couple of grey geese which didn't seem to be interested in the bread. They clustered around us while we fed the ducks but they didn't eat. One of them kept looking up into the sky, as if it could see something.

I turned round to see what it was looking at, but I couldn't see anything in the air behind me.