Devious Koel has striking look

The male Common Koel is easily identifiable by its glossy black plumage, long tail and red eyes.

Birds of Boyne and Tannum with Bob Trask

Often called a Storm Bird, the Common Koel is a cuckoo and so deviously lays its eggs in the nests of other bird species where the host birds raise their young for them.

The male and females looks very different with the male, as seen in this photo, being easily identifiable by its glossy black plumage, tinged with blue and green, long tail and striking red eye.