Having been an avid birder for more than half a century, I had no difficulty identifying this avian amazement.
Phantom - you are so correct - their shape, flight pattern, and markings are so easy to identify!
I'm sure you weren't hallucinating (
nor had you had one too many! 
)
tricia - no question about it, their size is cause for complete awe!
Zee - you crack me up, even when you're not in the dining room! I miss your smiling face - it's a good thing your avatar has one! I'll be so ready for a hug from you in the spring!!!
Hope you two are staying warm and enjoying yourselves.
DRH, IG, IS, RG, JS - I'll bet y'all know what my first thoughts were when I saw this magnificent bird soaring in the heavens! My heart is so much lighter today!