UK Butterfly Monitoring Scheme
uses the transect recording method.

Annual reports are HERE

A TRANSECT is a fixed-route weekly walk, typically 1-3km, lasting 30-90mins.
Volunteers record butterflies in a 5m band in suitable weather in the 26 weeks Apr-Sep, 10.45-15.45.
Transects are often shared.
If weeks are missed, the online programme may estimate values from other counts.
A tailored field-sheet is provided and data is easily entered online.

Surrey transect data to download

2013201420152016, 2017, 2018

  • Sort by species to see their sites & flight periods
  • Sort by sites to see their species
  • See your own records at a glance

    To view the latest data

    1. Go to
    2. Login Surrey branch,
      pw Br1mst0ne (cap B, one & zero)
    3. Reporting: Annual Summary
    4. Select year
    5. Filter by recorder: All recorders
    6. Site type: Transect
    7. Filter by site: All sites
      Note option to Include non-butterfly species (if any)
    8. After data has loaded, select a site and note view/download options.
    9. Summary Chart tab has species options at the bottom.

      To view sites in detail

      Go to
      Select a site.
      At the bottom of the screen, select:
      Species list to view all butterflies
      More to view the butterfly's site data
      Species count to view each year

      Adonis Blue: UK details
      Adonis Blue: Denbies Landbarn B
      Denbies Landbarn B: all butterflies

      Transect volunteers are always needed.
      Please contact Bill Downey

      Wider Countryside Butterfly Survey

      Monitors butterfly abundance in the wider countryside away from hot-spots.
      The scheme is run in partnership with the British Trust for Ornithology.
      The 36 random squares allocated to Surrey (Vice-county 17)
      are in the Surrey Skipper.
      July & August, with at least 10 days between visits;
      optional further two visits in May & June.
      Walk the fixed transect, 10.45-15.45
      in good weather.
      Submit records online HERE
      Full details: WCBS website
      Anyone with good identification skills.
      Please contact Bill Downey