Read the results of the 2021 bailiwick Bat survey
Reports
The Bailiwick Bat Survey is a four year project and at the end of each year, BTO produce an annual summary report of the findings. The reports include a full species-by-species breakdown of spatial, seasonal and through-the-night patterns of activity. At the end of the four years, a final report will be produced.
Read the results of the 2022 bailiwick Bat survey
2022 Bailiwick Bat Survey Report
During 2022, 622 different locations across the Bailiwick of Guernsey were surveyed. Recording was undertaken on 209 different nights mainly between April and the end of October, amounting to a total of 2,416 nights of recording effort across sites.
Overall, 3,389,138 recordings were collected which, following analyses and validation, were found to include 872,126 bat recordings, and 8,587 small terrestrial mammal recordings. Over 2 million recordings of bush-crickets and audible moth species were also recorded as ‘by-catch’, for which we report species presence on a site and night basis.
