This is a male. Both males and females have dark spots, but the male has white ones too.
I found this male perched on a twig beside a small East Gwillimbury pond. He was protecting his territory, sitting on weed tops and then flying out to challenge any other male who entered his area. Each tries to fly rings around the other. He who succeeds gets to sit on a nearby perch. The other has to move on.
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