Kestrels, As In Plural

Well, well, well! Thursday morning, male and female American Kestrels perched on the building down the block.The male.The female.The male flew back and forth from the rail atop the bulkhead to this ailanthus several times. Both falcons disappeared for a while, then their calls returned us to the windows. They were circling each other overhead. They landed on a nearby antenna, nearly side-by-side, then flew off again. Reunion? Courting?This time the male landed on the pipe the female had been on earlier, but only for a second. They were not noticed again that day, but on Friday, he showed up in in the afternoon.