BCE follows the Manual for Butterfly Transect Counts (in English) to do the monitoring of butterflies in Europe. There are several simple rules to follow for starting a new transect in your country.
There is a general manual for Butterfly Monitoring available in English, which has been translated into more languages:
Global guidelines on how to set up a Butterfly Monitoring Scheme is available as a report from GEO BON
Does not find the manual for Butterfly Monitoring in your language? you can help us in the translation and we will share it to do, the more available for other volunteers.