If anyone could definitively tell me what species my new friend here is, that would be much appreciated! Everything I could gather from internet image searches has me thinking it might be a (juvenile?) Broad-winged hawk.
He/she has become a regular morning visitor over our property here in Beckwith, Ontario (roughly equal parts mixed forest, open fields, and marsh), and has taken an interest in my drone flights. I'll post a follow-up with a video clip.