The term "Atlantic bird" is quite specific, referring to birds that live or migrate near the Atlantic Ocean. However, there are a variety of synonyms that can be used to describe the same or similar species. For example, one could refer to "coastal fowl," "seabirds," or "oceanic avians." Some specific bird species that might fall under the umbrella of an "Atlantic bird" could include gulls, terns, fulmars, and shearwaters. It's worth noting that different regions or experts might group birds into slightly different categories. Nonetheless, using alternative terms to describe Atlantic birds can be helpful for variety of diction in writing or conversation.