I believe it's been shown that Albatrosses can dynamically soar and make progress UP wind.
Such shouldn't be too difficult in suitable conditions with a reasonably strong gradient. A bit similar to tacking in sailing vessels .. but, probably, not an effective way to make progress ? Then, again, I guess that the bird has plenty of time on its hands, so long as the necessary fish for eating keep coming along ..
it wouldn't surprise me a bit to have a lot of vertical movement of air in the space from sea level to, say, 20 or 30 meters up.
Plenty of evidence to support that thought. However, I suspect that the bird will be doing better from the more predictable gradient profile than the more random turbulent mixing ?