Brown Pelicans have to be one of the flagship birds of the Atlantic coast. Sibley seems to imply it takes 3 years for them to reach maturity. It'd be interesting to really study the age classes.
I've seen them plunge dive from heights before, but there were also some other feeding modes. At one point a flock was jumping up, bouncing along the water, and then skiving in to the shallow water from a lower angle.