Here are some useful websites.

British Trust for Ornithology (BTO):

Gloucestershire Centre for Environmental Records:

The Gloster Birder:

Gloucestershire Wildlife Trust:

Wildfowl and Wetlands Trust (WWT):

Call of the Curlew – Conserving breeding Curlews in southern and lowland Britain:

Dursley Birdwatching and Preservation Society:

Cotswold Water Park Sightings:

Stroud Wildlife Survey Group:

Cirencester Wildlife Group:

The Bristol Wildlife Blog:

Butterfly Conservation:

British Dragonfly Society:

The British Lichen Society:

Cotswold Fungus Group:

Dean Fungus Group: