In article , Malcolm
writes


No, I'm sure you wouldn't and nor would others who have your knowledge
of our fauna and flora, but "cabbage white" is, in my experience, very
widely used as a generic term meaning any white butterfly(1), and as
such is just as imprecise as the term "seagull"!

I used to play chess with an enthusiastic 'twitcher' who nevertheless
dismissed a whole section of his interest as 'quackers' :-)
--
Kay
"Do not insult the crocodile until you have crossed the river"