Both of the first two shots were apparently at dusk in low light conditions - f5.6:1 sec and f2.8:1/2.5 sec and still underexposed. The third had better available light, at f5:1/240. The sharpness of the third is a result of the higher shutter speed.
When I was flying gliders in Tennessee and north Georgia, I often shared thermals with hawks, and once with an immature Bald Eagle. Those encounters were among the best moments of my time in gliders. We were always on the lookout of soaring hawks...
That's definitely not the same bird; it's a different species.
"Attack" may not be the right word for a bird simply flying close to the drone. When I'm wade fishing, sharks frequently come within 50 feet, but I would say that constituted a...