Thanks, Wurzel - yes, it's difficult to know which way to turn - though that well-known hill in Wiltshire looks favourite next along with Hutchinson's Bank.
Thanks, Kev - in a fortnight's time you will quite likely get to see the Small Pearls down there as well.
I am leading a walk at Bedfont Lakes Country Park tomorrow for the BC Herts and Middx branch, so I thought I should do a dry run to see what might be about (hopefully with as much sunshine as today). There were a variety of whites flying in the chilly breeze, and I spotted a tiny Orange Tip caterpillar on the only Cuckoo Flower I found all day.
It was clearly still too early for Common Blues and Brown Argus, and I have a feeling the Small Coppers have disappeared from this site now. However, passing close to the railway line that separates the two sections of the park, I spotted a Green Hairstreak. I don't think these have been seen before to the north of the railway. Unfortunately, my attempt at a photo was too dismal to post even with an apology.
Things then got even better. While trying to snap a settled Orange Tip, I became aware of a large orangey-pink butterfly flying around me. This was a really intensely-coloured Painted Lady. It was intent on feeding wherever it could when the sun shone, and by the look of its shrunken abdomen had been travelling for some while and used up most of its reserves.
I imagine it has come north during the recent spell of winds from the continent, along with all the Red Admirals. Finally, I spotted a female Holly Blue sunning herself in between contemplating laying eggs on dogwood plants.
I then drove round to the southern part of the park. I headed straight for the other side of the railway line to where I had been earlier, and sure enough found another Green Hairstreak. This time the photo was acceptable.
The other species here were similar to those found to the north.
One female Orange Tip was particularly cooperative with photos.
I also had time for a late walk round my local patch, but I think I'll make that a separate diary entry.
Dave