Welcome to the Upper Thames Branch of Butterfly Conservation

The Upper Thames region covers Berkshire, Buckinghamshire and Oxfordshire, which includes the Chiltern Hills and the North Wessex Downs Areas of Outstanding Natural Beauty. It is home to several rare species of butterfly and moth, including the Black Hairstreak, Adonis Blue, Silver-spotted Skipper and Duke of Burgundy butterflies, and the Striped Lychnis moth.

Please send comments about this website to webmaster@upperthames-butterflies.org.uk
Please support the Five Hairstreaks appeal! Donations doubled until 4th December!
It is possible to see three-quarters of the 58 British butterfly species in the Upper Thames region. More about our butterflies
Around 1000 moth species have been recorded in the Upper Thames region, with over 500 on our own reserve at Holtspur. More about our moths

First sightings (43)

14-Jul: Silver-spotted Skipper
14-Jul: Brown Hairstreak
07-Jul: Clouded Yellow
03-Jul: Chalk Hill Blue
29-Jun: Grayling
23-Jun: Gatekeeper


11-Dec: Field meeting (egg hunt)
Sandford Brake, Oxon
13-Dec: BMG meeting
Earley, Reading, Berks
16-Dec: Field meeting (egg hunt)
Rushbeds Wood, Bucks
20-Dec: Work party (Chiltern Rangers)
Strawberry Bank, Bucks
01-Jan: Field meeting (egg hunt)
Otmoor, Oxon
06-Jan: Work party
Holtspur Bottom, Bucks


30-Nov: Sightings updated
27-Nov: Protecting the Five Hairstreaks appeal launched
23-Nov: The Wood White Species Champion Report is available
22-Aug: The Black Hairstreak Species Champion Report is available
09-Aug: Members' Day and AGM