What is a group of Sires called?

A group of sires is commonly called a Stud.

Collective nouns for sires are words used to refer to a group of male animals, particularly those known for breeding and fathering offspring. These nouns serve as a concise way to categorize and collectively address a gathering of males belonging to various species or families. As sires play a crucial role in continuing the lineage through reproduction, utilizing collective nouns can prove helpful in discussions, presentations, or general communication where specificity is necessary. Some examples of collective nouns for sires include a "stallion", primarily used for a group of adult male horses reproductively active, a "bull", employed for a group of male bovines passing on their genetics, or a "ram", often used for a gathering of male sheep contributing to procreation. By employing collective nouns for sires, we enhance our ability to express and acknowledge the significance of these breeding males as a unified unit within their respective animal communities.