Bird ID requested

I know there are a lot of birders on this forum. I can recognize hawks, eagles, owls, ducks, geese, swans, and.... well, that's about it really. Lots of smaller birds look pretty much the same to me. We heard some commotion in our front yard this morning, and when we looked out it looked like a couple of birds were having a bit of a barney. One looked like a blue jay (at least, that's what my wife said). As I was grabbing my R7 with RF 100-400, both birds flew off, but one of them flew into our neighbor's backyard, so I was able to see it from our back patio, and get some shots of it perched on a tree in deep shadow. The camera was set to M with 1/1000 and the maximum aperture of the lens. I should have changed the shutter speed to a slower one, to get a lower ISO, because the bird was just perched (occasionally moving its head), but I was in a hurry. I was quite impressed with the camera's ability to pick out the eye, once I selected the single point focusing area (it was fooled by the branches and leaves when in zone, which is what I was using yesterday). I have it set up so that it looks for eyes within the focus area when I activate tracking, which I do with the AF-ON button. These are pretty heavy crops (pretty much 100%). Can anyone tell me what bird this is?