Characteristics: Plymouth Rocks are a good general farm chicken. They are docile; normally will show broodiness; possess a long, broad back; a moderately deep, full breast and a single comb of moderate size. Some strains are good layers while others are bred principally for meat. They usually make good mothers. Their feathers are fairly loosely held but not so long as to easily tangle. Generally, Plymouth Rocks are not extremely aggressive, and tame quite easily. Some males and hens are big and active enough to be quite a problem if they become aggressive. Breeders should be aware of the standard weights and not select small or narrow birds for the breeding pen. Common faults include shallow breast, high tails, narrow bodies and small size.