@Supersonic_Red I didn't think about the injury factor, makes sense. Saw one with an injured wing that was never able to fly away. Tried to catch it, but was always out of reach. No doubt it went to a predator.
@Thunder46216520@TheZignal I don't know, at times the shape looks like a ram air canopy. As it moves around it seems, at times, to have a top and bottom, and a front and back, but from this video it is not identifiable without a known to compare it to.