What does RIR stand for in chicken breeds?

RIR stands for Rhode Island Red, which is a popular breed of chicken. Rhode Island Reds are known for their reddish-brown feathers, and they are often used for meat and egg production. They are also known for being friendly and docile, which makes them a popular choice for backyard chicken keepers. Rhode Island Reds were originally developed in the United States in the late 1800s, and they quickly became a popular breed. Today, Rhode Island Reds are one of the most popular chicken breeds in the world.