Field Events

Sunday 15 August

Butterflies at Aston Upthorpe Downs


Join Jim Asher,former Chair of Butterfly Conservation and co-author of the ‘Millennium Atlas of butterflies in Britain and Ireland’, for a walk to look for butterflies in Juniper Valley, which forms part of Aston Upthorpe Downs Site of Special Scientific Interest.
Aston Upthorpe Downs is one of the last remaining large areas of chalk grassland in the Berkshire Downs. In addition to its species-rich chalk grassland and juniper scrub, Aston Upthorpe Downs is particularly important for its butterflies and other invertebrates. In mid-August, we should be able to ind Chalkhill Blue, Common Blue, Small Heath, Large and Small Skipper butterflies, and if we’re very lucky we might even spot a brilliant Adonis Blue, or an irridescent Green Hairstreak. Bring a butterfly identification guide if you have one.

Leader: Jim Asher

When: Sunday 15th August 2021, 10:15am to around 1pm

Where: Park at the grain store at the top of the road signed ‘To the Downs’, to the south of Aston Tirrold. Approx. postcode: OX11 9DS Grid Ref: SU550845

Getting there: Driving east towards Streatley on the A417, turn right at the road signed ‘To the Downs’, about 1.5 miles beyond Blewbury, due south of the first (westernmost) turning into Aston Tirrold. The grain store is approximately 1 mile at the top of this single track road.

Map: Park at the grain store – RED pin on the Google Maps link

What to expect: a walk of around 5km on potentially muddy, uneven ground, including some steeper slopes. Wear stout walking boots and clothing suitable for the weather. Note: there are no toilets in Juniper Valley!
To book a place on this field outing: Please email Alison at

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