Butterflies.

Comma. 

I have been most concerned this year that there have been so very few of our usual butterflies.

The only upside has been that we have seen a few this summer which only seldom visit us: commas, small blues, ringlets.

I have seen a single tortoiseshell but: no red admirals, no peacocks, no painted ladies, no speckled woods, no meadow browns - just a few scruffy whites.

A matter of grave concern.