Search for Brown Hairstreak butterfly eggs at BBOWT's Bernwood Meadows reserve.
Species to look out for
Welcome to the Upper Thames Branch of Butterfly Conservation.
The Upper Thames Branch covers Berkshire, Buckinghamshire and Oxfordshire, which includes the beautiful rolling hills of the Chilterns. It is home to several rare species of butterfly and moth, including the Black Hairstreak, Adonis Blue and Striped Lychnis Moth.
If you live in the region and are a member of Butterfly Conservation you automatically become a member of the Upper Thames branch.
Your butterfly and moths records in the Upper Thames region are essential to our conservation work
Butterflies in towns and cities declining faster than their countryside counterparts
Some of the UK's best-loved birds and butterflies could be wiped out as there is not enough habitat for them to cope with the effects of a warming climate.
World-renowned butterfly scientist Dr Martin Warren has been awarded with an OBE for services to the environment.