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):

Southern Curlews – Conserving breeding Curlews in Southern England:

Dursley Birdwatching Society:

Cotswold Water Park Sightings:

The Bristol Wildlife Blog:

Butterfly Conservation:

British Dragonfly Society:

British Lichen Society: