This is a small and colourful bird found in parts of South and Southeast Asia. Male and female Purple Sunbirds exhibit significant differences in their plumage. Males have striking metallic purple-blue plumage on their upperparts and a bright yellow breast and belly. Females, on the other hand, have a dull brownish or olive-green coloration to better camouflage themselves while nesting. They use their specialized long, slender bills to extract nectar from flowers. During the breeding season, male Purple Sunbirds perform aerial displays and sing to attract females. These birds are known for their melodious and varied calls. Males may use vocalizations as part of their courtship behavior. While some populations of Purple Sunbirds are sedentary, others may exhibit seasonal movements.

When kept in captivity, these birds have been noted to live for nearly 22 years.