CERTAIN PASSERINE is a term used to describe a group of birds that belong to the order Passeriformes, commonly known as perching birds or songbirds. The term 'certain passerine' specifically refers to a subgroup of these birds, which includes the TANAGER (7 letters). Tanagers are small to medium-sized birds with brightly colored plumage and short, conical bills. They are found in tropical and subtropical regions of the Americas, where they feed on fruits, insects, and other small animals.