Aston Rowant NNR - 14th September 2016
Although it was a very warm and sunny afternoon on Bald Hill, at the western end of the Aston Rowant NNR, there was no doubting that the butterfly season is nearing its end. Flowers on the slope were rather few and far between, with most having set seed or produced brightly coloured fruits, such as these Black Bryony stems. Do not be tempted by them, since they are extremely poisonous, as are all parts of this plant.

- Aston Rowant NNR - 14th September 2016
Olympus E-M1 with Leica 100-400mm lens - 1/640s@f/6.3 ISO640
A few Scabious flowers were still to be found, as well as Harebells and Eyebright, low in the grass. Their locations seemed to be well-known to the local insects and I watched both bees and butterflies travelling unerringly from one flower head to the next. Butterflies were limited to Meadow Browns and some rather aged-looking Common Blues. I was, of course, keeping a look-out for a possible Clouded Yellow, but without success. One small, yellowish butterfly had me confused for a few moments, until I realised it was a Small Heath. I am often taken by surprise by these lively little butterflies, as they can look quite different in different lights – sometimes rather dull but, when flying in bright sunlight, looking golden yellow.

- Aston Rowant NNR - 14th September 2016
Olympus E-M1 with Leica 100-400mm lens - 1/800s@f/9 ISO640

- Aston Rowant NNR - 14th September 2016
Olympus E-M1 with Leica 100-400mm lens - 1/800s@f/10 ISO640
I have mentioned before how I feel that historians of the future may get a curious impression of the relative abundance of British butterfly species, if they base their judgement on the number of photos taken. This year, I have seen 37 species (photographed 35) and the numbers of photos I have kept of each species are shown in the following table:

- (click on table to enlarge)
The numbers of photos relate far more to my personal interest and opportunities, than to natural abundance of butterfly species! For example, all 51 photos of Purple Emperor relate to a single individual male, who provided me with an entire repertoire of views, without my having to venture beyond the Bernwood Car-park!
On the other hand, Whites, both Large and Small, have been abundant in my garden throughout the summer but, somehow, I never get round to pointing a camera towards them.
Some low numbers, such as Essex Skipper, merely reflect the effort needed to get into a position from where positive identification can be made. Others, like Clouded Yellow, are just plain difficult to capture on camera, as they zip around a meadow without pausing.
Of course there's still the chance for Clouded Yellow photos – some of
my favourite shots were taken in October 2014. The season may not be over yet
Mike