Round object with transparent dome over Nantes attributed to a kite

Summary

In August 2007, two people watched from their terrace in Nantes as a round, flat flying object with a transparent dome rose with a rocking motion from east to west. No sound was heard and the observation lasted several minutes. There were no other witnesses. The investigation concluded it was most likely a circoflex-type kite, though no additional records were found to confirm the identification.