The Sourwood is a beautiful tree and one of the most abundant trees in my forest. They are usually (but not always) crooked and leaning, with dark, blocky bark. The leaves are very finely toothed along their margins with hairy midveins on the underside. The clusters of seed capsules are very distinctive. Together with the Blackgum, they are responsible for most of the red coloration of the forest canopy in the autumn.
The pictures below show a large specimen towards the SE corner of Lot A.
The first picture below shows the trunk of the large tree in Lot A, to the SE of the ridge. The second picture below shows two specimens in Lot C forming a scarlet mid-story canopy, with a large White Oak in the middle background.
The first picture below was taken just outside the SW boundary of Lot B. The Sourwood tree in the second picture had already lost all of its leaves so the white seed capsules were conspicuous.
This is a large specimen just north of the ridge in Lot A, circumference at chest height 4ft 2".
The biggest Sourwood I have seen so far is a contorted specimen just downslope to the north, on the southern ridge of Lot B, in the rhododendron thicket. Its circumference at chest-height is 4ft 11.75".
The deep red / purple colors seen by drone are usually Sourwoods or Blackgums.