|Male Asian koel|
|Female Asian koel|
|Wikisource has the text of the 1920 Encyclopedia Americana article Koel.|
The true koels, Eudynamys, are a genus of cuckoos from Asia, Australia and the Pacific. They are large sexually dimorphic cuckoos which eat fruits and insects and have loud distinctive calls. They are brood parasites, laying their eggs in the nests of other species.
The taxonomy of the common koel complex is difficult and remains a matter of dispute, with some only recognizing a single species (common koel, Eudynamys scolopaceus, with melanorhynchus and orientalis as subspecies), two species (common koel, Eudynamys scolopaceus, with orientalis as a subspecies, and black-billed koel, Eudynamys melanorhynchus) or three species (as done below).
|Image||Scientific name||Subspecies||Common Name||Distribution|
|Eudynamys scolopaceus||Asian koel||India, Bangladesh and Sri Lanka to southern China and the Greater Sundas|
|Eudynamys melanorhynchus||Black-billed koel||Indonesian islands of Sulawesi, Sula, Banggai, Togian|
|Eudynamys orientalis||*Australian koel, Eudynamys (orientalis) cyanocephalus||Pacific koel||Wallacea east to the Solomon Islands and south to northern and eastern Australia|
- Henderson Island koel, Eudynamis cf. taitensis – prehistoric
- David, N., & Gosselin, M. (2002). The grammatical gender of avian genera. Bull B.O.C. 122: 257-282.