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Lesser horseshoe bat trends for Great Britain

Rhinolophus hipposideros

Species factsheet; Distribution and abundance

GB-level population trends for lesser horseshoe bat from the Hibernation Survey and the Roost Counts are shown on this page.

Population trends are also calculated for lesser horseshoe bat at a country-level for England and Wales. This species is not found in Scotland.

 


Hibernation Survey

GB index of lesser horseshoe bat population from Hibernation Surveys

Lesser horseshoe bat Hibernation Survey GB 2015

Note: The graph above shows the unsmoothed index value for each year (green crosses), the smoothed trend (solid line) and 95% confidence intervals (dotted lines). The smoothed trend for 2015 is shown as a dashed line to indicate that it is provisional.

The smoothed index is currently 138.1% above the 1999 base year value, equivalent to an annual increase of 5.6%. The smoothed index has increased consistently since the start of the monitoring period and this trend has continued in 2015. There has been a significant increase in the smoothed index since the baseline year.

A total of 308 sites contribute to the overall trend analysis (sites surveyed in more than one year and with lesser horseshoe bat present in at least one year).


Roost Counts

GB index of lesser horseshoe bat population from Roost Counts

Lesser horseshoe bat Roost Count GB 2015

Note: The graph above shows the unsmoothed index value for each year (green crosses), the smoothed trend (solid line) and 95% confidence intervals (dotted lines). The smoothed trend for 2015 is shown as a dashed line to indicate that it is provisional.

The smoothed index is currently 76.2% above the 1999 base year value, equivalent to an annual increase of 3.6%. The smoothed index has increased consistently since the start of the monitoring period and this trend has continued in 2015. There has been a significant increase in the smoothed index since the baseline year.

Data from 289 sites surveyed between 1993 and 2015 contribute to the overall trend analysis (sites surveyed in more than one year). 


Summary of survey results

Trends from the Hibernation Survey and Roost Count survey both show a significant increase in the smoothed population index since the baseline year. The population of lesser horseshoe bat in Great Britain is considered to have increased since 1999. 

 

Distribution and Abundance

The lesser horseshoe bat is rare in the British Isles and is confined to Wales, western England and western Ireland. 

Population estimate

Country UK England Wales Scotland N.Ireland
Number c. 50,000 unknown 28,000 does not occur does not occur
 Source Henry Schofield, pers. comm. 2008   Matthews & Halliwell 2009    

 


References

Matthews, J. E. & Halliwell, E. C. (2009) Lesser Horseshoe Bat Summer Roost Surveillance 20 May to 17 June 2003 - 2007 CCW Staff Scientific Report No. 06/9/1.

 


Return to:

Top of pageSpecies population trendsReport home pageContents page

 

 

 

Lesser horseshoe bat (Gareth Jones)

 

Lesser horseshoe bat factsheet

 

Listen to how a lesser horseshoe bat sounds on a bat detector 

 

 

Current distribution of lesser horseshoe bat in the UK

(Map taken from 3rd Report under Article 17 on implementation of the Habitats Directive in the UK, JNCC 2013)

Lesser horseshoe bat distribution

 

 

 

 

 

 

 

 

 

 

 

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