Folks, I suspect the first males may almost be imminent at 'early' sites in the South East. Camilla, the White Admiral, is starting to appear in Sussex, and camilla and iris are almost synchronised nowadays.
Neil is giving it a go tomorrow... (it would be the earliest appearance since 1893, and the second earliest on record...), but mid-week or late next week would be more realistic.
Consider yourselves placed on Orange Alert, as opposed to Red Alert. Watch this space...
Definitely look for iris next weekend