update september 2020 ...
decided that, after five-and-a-half years on this fabulous site, I should say a little more about myself than the two sentences...
Thank you so much! @phil_howcroft Phil, these were in southwest France. My concern is that the ones in our garden in southwest England seem to have disappeared???
Thank you so much! @phil_howcroft Phil, these were in southwest France. My concern is that the ones in our garden in southwest England seem to have disappeared???