The collared kingfisher (Todiramphus chloris) is a medium-sized kingfisher belonging to the family Halcyonidae, the tree kingfishers. It is also known as the white-collared kingfisher or mangrove kingfisher. It has a wide range extending from the Red Sea across southern Asia and Australasia to Polynesia. It is a very variable species with about 50subspecies.
It is most commonly found in coastal areas, particularly in mangrove swamps. It also inhabits farmland, open woodland, grassland and gardens. In some parts of its range, especially on islands, it can be seen further inland, ranging into forest or into mountain areas. Birds often perch conspicuously on wires, rocks or bare branches. source