When one says "bird of another feather," they typically mean that someone is very different from themselves or their group. There are a variety of synonyms that can be used to convey a similar meaning, such as "a fish out of water," "a square peg in a round hole," "a black sheep," "an oddball," and "a misfit." All of these phrases convey the idea of someone not fitting in or being different in some way. It's important to remember that being different is not a bad thing, and it's okay to stand out and be unique. Celebrating diversity and individuality is what makes the world a more interesting and inclusive place.