Judging by the date you most likely have a coopers or sharp shin hawk visiting you on migration. I’m to your south and around the same time I had a couple of them, inexperienced ones, mobbing my aviary- boy was one surprised when he dived at a conure and I popped up instead when my birds let rip the alarms calls- I had been stooped over inside scooping feed for my birds. It’s seasonal.
They’ve been back for the last couple of weeks.