Here’s a list of small species of birds with the most brilliant and brightest coloration.
All body parts of the first bird on the list are extremely colorful. The bill, the feet, the head, the wings, the belly and all other parts are indeed brightly-colored.
1.) Oriental Dwarf Kingfisher (Ceyx erithaca)
The Oriental Dwarf Kingfisher is a surefire winner in terms of brightness of coloration. This small red and yellow kingfisher with yellow under parts and bluish upper parts inhabits lowland forest of South Asia and Southeast Asia. It is also commonly known as the Black-backed Kingfisher.