* Availability of food and water: Larger herds might be found in areas with plenty of resources.
* Time of year: Herds might be larger during mating season or when young are born.
* Social dynamics: Groups can split or merge depending on individual relationships and dominance hierarchies.
Generally:
* Small herds: 2-5 giraffes are common.
* Larger herds: Up to 30 giraffes have been observed, but these are rare.
It's important to note: Giraffes aren't as tightly bonded as other herd animals. They may interact loosely within a larger group but often roam and feed independently.