No birds to photograph yesterday,but butterflies on the lawn.We were surprised that we could photograph this Chequered Swallowtail through a 400mm prime lens,using f8 a 1/5000sec at ISO 800,using our antiquated Canon 40D camera.Being 3.5 metres away from the insect ensured that it was not aware of our presence while feeding.In the film days we would have expected to use a macro lens and flash.Well-so much for modern equipment and a bit if ingenuity.