Got a second hit today and didn't miss this time.
We are now on Santa Maria and went out to the unchartered (birding wise) Formigas Bank. Despite this being our guarded secret target for the last six months we saw bugger all out there. However got the Fea's on the way back.
Some serious dolphin action in these waters and despite doing Ilheu de Vila at dusk we didn't see a single Band-rumped Petrel.