So, there's no difference in barking habits between Yorkies and Yorkshire Terriers. They are the same thing!
However, it's true that Yorkshire Terriers are known for being relatively vocal dogs. They tend to bark more than some other breeds, often to alert their owners to something or to express their feelings.
If you're concerned about a Yorkshire Terrier barking excessively, it's important to address the root cause. This might involve training, socialization, or addressing any underlying anxieties or boredom.