There are two subspecies of Brown Pelican, Atlantic and Pacific. They differ slightly in size and in breeding colors. Since I was on the east coast of Florida when I took this photograph, I must assume it is an Atlantic Brown Pelican although my Sibly Guide to Birds indicates there is some movement of these populations across Central America. A few of the Brown Pelicans we saw were in breeding plumage but this bird is still in its non-breeding plumage.