Author 'Gilbair' (Id 235027 ) : Well on looking at the photograph one can doubt the color of the rear of this drone. To have observed and photographed it is a 'White Ass' or buff-tailed bumblebee. As for the margarita, it is probably not a daisy current, but this very large solid mass of yellow flowers (to 2 m tall) was any indication. If there is a botanist amongst you I would be happy to have a indication.
Botanical garden of Geneva
EXIF : image IMG_7953. JPG ; Date : 02. 07. 2017;
Model=Canon IXUS 145; Exposure Time=1/160 sec
FNumber=F3. 2; ISO=100; Focal Length=5. 00 mm ; Copyright : G. B.