Cerulean Kingfisher

The cerulean kingfisher (Alcedo coerulescens) is a kingfisher in the subfamily Alcedininae which is native to parts of Indonesia. With an overall metallic blue impression, it is very similar to the common kingfisher, but it is white underneath instead of orange. Males average bluer than females, which have a greenish cast.
It is sometimes called the small blue kingfisher but in Indonesia and parts of Asia that name refers to Alcedo atthis (common kingfisher).