The version I know has after the plumes s'envolent au vent, trois dames s'en vont les ramassant, elles en feront des lits de camp, pour accueillir tous les passants.

I am not familiar with these other versions, I think the one about sending the girls to a convent and the boys into the army rings the most true, what with knowing what I know about the French. I don't have this as Canadian, somehow.

I know at least 4 versions of these/this song, where the prince kills the white duck while aiming at the black one, most of which end after he kills the duck, and don't go on to the feathers blowing away. Some of them have chorus gestures like many children's songs.