Radio-tracking data obtained from adult female <i>Pipistrellus pygmaeus</i> before (control) and after (exclusion) being excluded from roosts.

** Estimated maximum number of bats using the original colony roost prior to exclusion. †n roosts used by tagged bats; excludes roost data where bats were not located or where tags had failed. ‡ Parentheses = number of roosts that were used during both control and exclusion periods. * Data accumulated over 4 to 7 day control and exclusion periods. Radio-tracking data obtained from adult female Pipistrellus pygmaeus before (control) and after (exclusion) being excluded from roosts.