Indoors, I heard them before I saw them, and whatever it was they were up to sounded very much like major celebration. So I raced outside and the blue sky seemed full of gleaming sunlit underbellies. And had there been solo honking earlier it had ceded now to full chorus. No photographic exhibition will host the images I made hastily with only my iPad to hand. But I shall keep the grainy reminder that allowed me, after the event, to count a flight of 110 wild geese above our house, as I swallowed the lump in my throat, celebrating the harmony and hymnody of their communion.