The rituals surrounding birth, death, and other life passages are extensive, as are those relating to more mundane activities, from hunting a tapir to planting a rice field.
The flight feathers of some birds have evolved to perform additional functions, generally associated with territorial displays, courtship rituals or feeding methods.
Rituals to please these spirits were held during feasts and other occasions like planting and harvest season, drought and in times of dreadful epidemics.
