It looks like a butterfly to me
Maybe American Snout, the wing shape and pattern is a good match, and butterflies when backlit often show more of the top pattern than the bottom pattern as they are slightly translucent -
Source...
As you didn't notice the object at the time, maybe it wasn't as visually striking "in the real world" as it appears in the photos.
You raised another possibility, that the object travelled so fast that it traversed your field of view faster than...
Ours aren't. Ours can pull up and land delicately on a nest not much larger than the top of a telegraph pole, and not knock it off. However, there's survivorship bias potential there, and of course existence of the graceful does not deny the...
Many years ago when our kids were small we wallpapered a bathroom with a cutesy baby-animal motif. A visitor told us how hard it was to perform at all with a little fox right over the toilet, looking downward.
They look like Starlink horizon flares.
Do you have video of them accelerating or reversing direction? That's a common illusion with SHFs, but the video always shows straight lines at constant speed.
The sun is 93 million miles away, so I don't think the difference in angle relative to the sun is enough to be significant. The angle from camera to (presumed) target will be.
Same here, eagles moving into a nearby heronry. I was once watching the colony when two eagles wheeled in, and the herons immediately broke into a loud chorus that I can only interpret as "Lock up your children, there goes the neighborhood!". The...
There's a great egret colony near where I live, which is also an area of very successful bald eagle recovery. They look like big awkward birds, and you'll never see them moving fast normally. But when they think an eagle is locked in on them they...