Hi Dave, I was actually in Swanage on the morning of 3rd Sept but we went off to RSPB Arne from there. Sorry I missed you at Durlston.
Thanks Trevor, I have visited that area of Dorset quite regularly at this time of year and can usually find 18-19 species

, not quite made it to 20 yet.
Sorry about making you well up a bit Wurzel
Thanks Goldie, that is a beautiful bit of coastline
A dull, grey and damp day here has given me chance to do the next report...
Dorset August 31st to September 7th part 2 – Adonis Blues
My main target species when visiting Dorset at this time of year is always Adonis Blues. I don't often get to see the first brood as my plans earlier in the year usually take me elsewhere, so I like to catch up with the second brood in early September on the Dorset coast. During my previous visits I have always found the Adonis Blues in Dorset to build in numbers through the second half of August and reach a peak in the first week of September, hence the timing of our usual breaks down there. Given the weather this year and the fact that many summer species seemed to have had early and comparatively short flight periods, I was a little concerned that I may have missed the best time to see Adonis Blues this year. As it turned out, my concerns were groundless as I saw plenty of good condition examples of both sexes and most sites visited had a good assortment from worn and faded to recently emerged. In fact the timing this year seemed pretty much in line with what I have seen in previous years.
We arrived at
Durdle Door on the first Friday afternoon just before 4.00pm and after settling in to our caravan and having a coffee, I went for a wander to stretch my legs after the drive down. It was a beautiful afternoon with clear blue skies and I made my way straight to the far right of the the car park and through the gate onto the grassy slopes above the famous arch. As I followed one of the paths diagonally down across the slope I soon began to see the first butterflies here, mostly Small Heaths and a few Meadow Browns and Small Whites. I headed down to the lower part of the slope and began to see a few Adonis and as I moved across the slope I spotted more and more with a few Common Blues mixed in. I spotted a nice fresh male basking down in the grass and took my first Adonis photo of the week.

- Adonis Blue male - Durdle Door 31.08.2018
Staying at
Durdle Door meant that I could visit these slopes easily and most days saw me having a wander along them at some point, either in the morning before we went out somewhere or later in the afternoon after returning to our caravan. The numbers of Adonis seen varied depending on how long I was there and how warm it was and anything up to 50 odd could usually be seen scattered across the slopes.

- Adonis Blue male - Durdle Door 05.09.2018

- Adonis Blue female - Durdle Door 02.09.2018

- Adonis Blue female - Durdle Door 03.09.2018

- Adonis Blues - Durdle Door 05.09.2018
I have mentioned before that one of my favourite sites in the area is along the bridleway that leads diagonally across the hillside from the back of
Osmington village up to White Horse Hill. I was keen to visit here again and in fact went twice, on the Saturday afternoon (1st Sept.) and again for a couple of hours on Tuesday afternoon (4th Sept.).
On both occasions there was a mixture of cloud and sun with the temperature reaching 22/23 degrees which meant that there were plenty of butterflies actively flying across the hillsides. This site has usually produced the highest numbers of Adonis Blues that I see down here and I am pleased to say that it came up trumps again with at least a couple of hundred flying all along the slopes above the path.

- Bridleway up to White Horse Hill at Osmington. Adonis Blues all along the slopes above the path.

- Adonis Blue male - Osmington 01.09.2018

- Adonis Blue female - Osmington 01.09.2018

- Adonis Blue pair in cop - Osmington 01.09.2018

- Adonis Blue male - Osmington 04.09.2018

- Adonis Blue female - Osmington 04.09.2018

- Adonis Blue female - Osmington 04.09.2018

- Adonis Blue female - Osmington 04.09.2018
One particular undersized and slightly worn female turned out to be ab. with reduced spots on her hindwings, although I couldn't get a shot without her being photobombed by another female that was sharing the same flower head.

- Adonis Blue female ab. - Osmington 04.09.2018
On Sunday afternoon (2nd Sept.) I decided to have a walk across to
Bindon Hill above Lulworth Cove. I have walked there a few times in previous years and always taken the coast path across the top of Hambury Tout. This time I decided to take a footpath that I had spotted which led from the entrance of the car park at Durdle Door and followed a route around the landward side of the Tout and came out on the road a little way up from the car park at Lulworth Cove. From there I went back up the road and onto Bindon Hill through the gate just off the main road.
Although the weather was similar to the previous day, e.g. mixed cloud and sun, there was a bit of a breeze which could be felt more as you moved higher across the hillside. Good numbers of Adonis Blues were flying although nowhere near as many as at Osmington, but nevertheless I reckon I saw at least 40 odd individuals of both sexes.

- Footpath to Lulworth from Durdle Door

- Adonis Blue male - Bindon Hill 02.09.2018

- Adonis Blue male - Bindon Hill 02.09.2018

- Adonis Blue pair in cop - Bindon Hill 02.09.2018
On Tuesday morning we popped into Weymouth and then had a drive over to
Portland. Before heading back we called in to
Tout Quarry and whilst Jane and my mom wandered about looking at the stone carvings I checked out some of the side paths. Despite the clear skies and warm sun, there were not many butterflies there but amongst those that I did see was a single male Adonis Blue.

- Adonis Blue male - Tout Quarry Portland 04.09.2018
Wednesday (5th Sept.) afternoon saw us at
Durlston Country Park for a couple of hours. Jane and my mom had a slow wander along the tarmac path towards the lighthouse whilst I headed down to the gully to see what was about. I have to say that this site was the driest I have ever seen it and the gulley still looked particularly parched. This had obviously affected the butterflies as although I saw the usual expected species including Adonis Blue, with one exception (Small Copper) these were all in lower numbers than seen here in previous years. There were also a larger percentage of worn Adonis here, possibly reflecting an earlier flight period than the sites at Lulworth and Osmington.

- Adonis Blue male - Durlston 05.09.2018

- Adonis Blue male - Durlston 05.09.2018
The final site visited was on the morning of Thursday (6th Sept.) when I dropped Jane and my mom off in Swanage for a couple of hours and carried on to
Ballard Down. Good numbers of Adonis Blues were flying here although like at Durlston there was a higher proportion of worn ones flying. From my experiences in previous years and again this year, I suspect that both Durlston and Ballard Down are earlier sites than Osmington, Durdle Door and Bindon Hill.

- Adonis Blue male - Ballard Down 06.09.2018

- Adonis Blue female - Ballard Down 06.09.2018
So then, plenty of Adonis Blues were seen but what else was there?
Next to come...the other Blues.
Neil.