Домовая ласточка Hirundo tahitica

Common swallow of Southeast Asia and the Pacific, often in cities and towns as well as above fields, lakes, and forests. Adult iridescent blue above and grayish buff below, with orangish throat and forehead. Similar to Barn Swallow, which has longer outer tail feathers and a dark line separating the throat and breast, lacking in Pacific. Frequently perches on telephone lines, often with other swallow species.