If I hadn’t stopped to ask a friend how much rain had fallen during the night I would never have caught sight of a paper wasp nest attached to a cereus cactus some 4 m high just outside the back gate. The nest is very different to the one I filmed hanging from a metal railing. The wasp is much smaller, only 10mm long. It belongs to a different genus. At most there were no more than 6 wasps attending the nest. Its position was ideal for the camera.