We’ve not seen any Herons in the nest behind our home, this winter (example from last year), but at lunchtime I noticed “something” there so got my high zoom camera out to take a closer look.
Here’s a photo of the general view with the Heron nest in the distance; it’s hard to spot that there’s something there, but take the camera to maximum zoom, and we find a Great Horned Owl!
Distant nest in Independence
Great Horned Owl on the nest
Great Horned Owl on the nest
Great Horned Owl on the nest
UPDATE: I videoed the Owl for a while – turns out they are really quite inactive! But when it stands and looks around under itself near the end, I wonder if it’s checking eggs …
M&I / GBMINI 
Absolutely amazing; you two are sooo lucky!!!!