Snowdrop Anemone (or Wild Swan)

There are heavy showers here today, so I'm not going out for a blip-hunt walk; the garden will have to do.

According to my computer's Photos application this is Anemone Sylvestris, or Snowdrop Anemone.  I'm happy to be corrected, of course, and Mrs B tells me that she received it from RSPB colleagues when she left her job there years ago, and it was called Wild Swan.