Researchers from the UK have used small radars to track butterfly movements. The aim of the research has been to follow the butterflies, since the devastations they seem to commit to lack of direction are due to the search for food or shelter, while on other occasions it is to embark on a more direct path near the ground to escape a predator or change of environment.
As they have explained, to glue the tool on the back of the butterfly, first they had to remove the hairs and then use the adhesive.