Here's why:
* Broiler chickens: These are specifically bred for fast growth and meat production. Both male and female broiler chickens grow quickly, reaching market weight in just a few weeks. In this case, male broilers tend to grow slightly faster than females.
* Other chicken breeds: For most other breeds, hens typically grow faster than roosters in the early stages of life. This is because they are primarily focused on reaching sexual maturity and egg production. However, roosters eventually catch up in size and often become larger than hens in mature adulthood.
Therefore, it's not a straightforward "yes or no" answer. It depends on the specific breed and purpose of the chickens.