This video from the USA says about itself:
Meet the Natives: Wild Bees
27 August 2013
Follow University of Wisconsin-Madison Entomologist Claudio Gratton as he studies native bees and their habitats in search of new options for pollinating plants.
Learn more in our related QUEST article.
After 1980, over forty wild bee species have been seen on Vlieland. Probably there are more, as there has not been that much research.
Unfortunately, the moss carder bee was not seen this year, though it had been seen in earlier years.