*Cinnyris asiaticus*, commonly known as the eastern sunbird, is a small and vibrant bird belonging to the nectariniidae family. Found across South and Southeast Asia, this species thrives in a range of habitats, including gardens, forests, and urban areas. Measuring approximately 10 to 12 cm (4 to 5 inches) in length, the eastern sunbird exhibits sexual dimorphism, with males showcasing striking plumage. Males typically have an iridescent greenish-blue back, a bright yellow belly, and a distinctive black throat that can appear purplish in certain lights. Females, on the other hand, are more subdued, sporting a brownish-yellow body with streaks, which helps them blend into their surroundings.

Eastern sunbirds are known for their long, curved bills, adapted for feeding on nectar from flowers. They also consume insects and spiders, making them versatile foragers. Their agile flight and hovering ability allow them to access nectar-rich blossoms effectively.

During the breeding season, males perform elaborate displays and sing melodious songs to attract females. The female builds a small, suspended nest using plant fibers, spider silk, and leaves, typically laying 2 to 3 eggs. Their vibrant colors and lively behavior make eastern sunbirds a delightful sight for birdwatchers and nature enthusiasts.