Well...again, according to the Birder's Handbook, it says "the amount of male parental care is highly variable: most do little if any feeding of nestlings or fledglings." So maybe what you saw was a result of this behaviour...all the males were out playing while the females were back at the nest sites doing all the work. Just a thought.
One day last week I was out doing a little birding in the Bellamy Ravine here in Scarborough and all I saw was the male Indigo so maybe I witnessed the same thing happening. Don't know for sure, I'm still learning too.
Walter