Data sources

TVERC collect and collate records of species from a variety of sources, including:

• Local natural historians & local wildlife groups
• Ecological Consultancies (often via local authorities)
• Local Wildlife Site surveys
• Landowning NGOs & charities (e.g. BBOWT, RSPB, NT etc)
• Government Bodies (e.g. EA, NE etc)
• Private landowners (e.g. for agri-environment schemes)
• Other businesses (e.g. Thames Water)
• Members of the public (incidental records)
• Other TVERC run recording schemes (Otter Spotters, crayfish surveys)

Species data is assigned a 'Data Origin' code to allow users to determine where the data came from.