Saturday 4th June 2011
On Saturday we visited Oxfordshire, hoping to see the Black Hairstreaks. We got to Bernwood Meadows (near Horton-cum-Studley) at about 9:30 – greeted by cloud. This was a bit of a shock as the forecast had been good and we were only dressed for hot weather! Luckily the clouds shifted by about 10:15, and we spent our first couple of hours at the far end of the meadows where the ride enters the edges of Bernwood Forest. I saw several Common Blues, Large Skippers and a couple of Marbled Whites in the field: there were plenty of Ox-Eye daises and quite a few orchids. I spotted my first couple of Black Hairstreaks above the Blackthorn between 10:30 and 11:00, but they weren’t moving. We started the walk into the Bernwood Forest where luckily I spotted a single Black Hairstreak in great condition about head height. After a bit of breeze the butterfly flew (or dropped) into the grass below – I’d never sent that before. I watched and after a couple of minutes the Hairstreak and soon it was up again on the Blackthorn, and then flew off into the Oaks.
We had a quick round Bernwood Forest at this point and saw several more Common Blues, a few Speckled Woods and some Meadow Browns. We returned to Bernwood Meadows, but saw no more Black Hairstreaks near the ride, so we left for Whitecross Green Wood (though my wife did spot another BH - perhaps pregnant female - on the Blackthorn about half-way across the field towards the entrance. We watched her (?) for a while – another pristine individual – for a couple of minutes.
In Whitecross Green Wood we went straight for the far Western side, along the main ride, where we had seen Black Hairstreaks the previous year. Near the ride by the small pond, again there were plenty of Black Hairstreaks – all staying above the Blackthorn and rarely coming down. Some were nectaring on Buckthorn flowers, but keeping to the flowers that were above our heads and out of reach. Walking to the far edge of the Western side of the reserve there were several more mini-groups of the Hairstreaks – I would estimate I saw about 20 individuals in this part of the reserve. We stayed until about 4:30 and left the ride, before bumping into Chris Bottrell, who was great fun to speak to – he’s normally linked to the Upper Thames valley Butterfly conservation. He pointed out a new spot right outside the far side of the reserve (near the end of the main ride taken from the entrance to the reserve) where there were several more Black Hairstreaks. I think we saw another six individuals there but the wind had picked up slightly and it was a bit late in the day for some really good views. We left Oxfordshire just before 6pm a little burnt but happy. I love this part of the world – I’m only sorry we don’t have more time to see the Black Hairstreaks!
Michael

Bernwood Meadows in the sunshine - the far corner that links to the Bernwood Forest

Pristine Marbled White in the Bernwood Meadows.

A perfect Black Hairstreak along the main ride towards the Bernwood Forest.

Woodland ride Route towards the main forest.

A Black Hairstreak decides to visit the grass...

The normal view we're often left with - high above us on the Blackthorn (though in this case on Hawthorn leaves!).

Black Hairstreak looking slightly pregnant?

Fledgling Swallows at the start of Whitecross Green Wood.

Grizzled Skippers were still evident at Whitecross Green Wood.

The Western end of Whitecross Green Wood, were about 20 Black Hairstreaks were seen. But not photographed!

The Black Hairstreaks at Whitecross Green Wood nectaring on Alder flowers.