Answer:
cardinals are red birds, well the males are. the females are a cream brown color with a little red on there crown and beak. cardinals have a high-pitched voice not very high, but high. and they are state birds to more than one state, they are the state bird for my hometown Ohio i know for sure. i hope that answers your question.
Cardinal is also the title of certain senior ecclesiastical officials (usually Bishops) in the Roman Catholic Church. Cardinals serve as advisers to/representatives of the Pope and meet in conclave to elect a new Pope when the current Pope dies or resigns. They often have other religious duties as well. The name of the above-mentioned bird derives from the Catholic Cardinals because their formal, full-dress garment is a bright scarlet colour like the male Cardinal bird.