Black Vulture (catharista atrata).

Probably....
Been hunting around and this seems to be the most likely candidate.
I will be more than happy if someone proves me wrong.

Any Hoo, Lots of these riding thermals and crossing the bay in a spiralling mass.

We were supposed to leave Vitoria yesterday but a wee breakdown in one of the engines meant we had a night alongside... bummer:0)

Today sees us all sorted and heading back out to sea