Final answer:
Bira ceremonies are held outdoors, in alignment with traditional Indigenous practices, which missionaries accommodated by creating open-air chapels.
Step-by-step explanation:
The bira ceremonies are traditionally held outdoors.
Historically, Indigenous pagan rituals took place outside, and when European missionaries arrived with the intent to convert Indigenous peoples to Christianity, they accommodated these outdoor practices by constructing open-air chapels.
This approach allowed them to provide a sense of familiarity to the Indigenous during religious conversion, incorporating outdoor worship spaces into the design of New World churches.
In the context of other cultures, such as Balinese, private temple ceremonies like dance drama performances also take place outdoors, typically within the temple's courtyard.