Seabirds or in most cases harbour birds of the Lesser Antilles, a typical line up in most of the Islands we visited would be.....

Magnificent Frigatebirds

Royal Tern

Brown Booby

Brown Pelican

A bit further offshore..
Pomarine Skua off Barbados. The W Indies and the Gulf of Mexico are a regular wintering area for Poms.

Red-billed Tropicbird on St Barts. Although widespread in the Lesser Antilles, fairly localised in most places. Fortunately on St Barts (mostly renowned for being a playground for French millionaires) the ship had a tender birth because of the small size of the Harbour, meaning the ship stayed anchored offshore near some Ilets and cliffs that had a small breeding population of these delightful birds.
We also had some tropicbirds way out at sea; on the way out 2White-tailed were seen approx 1,000 miles East of the W Indies while on the way back a Red-billed was seen approx 300 miles East of the W Indies. But even more impressive was the distant tropicbird species seen approx 2,000 miles from W Indies when the closer land was actually  the Azores.