Farm birds are an important part of agriculture. They are an integral part of many diets, provide eggs, and are a source of meat. Some common farm birds include chickens, ducks, turkeys, and geese. However, there are various synonyms that can be used in place of "farm bird" to add variety to your writing. For example, you can use "poultry" to refer to all birds raised on a farm for their meat and eggs. "Fowl" is another synonym that can be used to describe domesticated birds, including chickens, turkeys, and ducks. "Avian" can also be used to describe birds on a farm. Overall, there are plenty of words to choose from when describing farm birds.