- Surniculus lugubris
Overall glossy black.Small white nuchal patch and white thighs are difficult to observe in the field.
From Drongos by thinner slightly down curved beak, forked tail (slightly) with white barrings on vent and under tail coverts.
Juvenile is slightly browner and has white spots on body and coverts.
Clements recognizes three subspecies:
- S. l. barussarum breeding in northeastern India, northern Myanmar, northern Thailand, northern Indochina, and southeastern China, including Hainan; winters south to Sumatra
- S. l. brachyurus from the Himalayas from Kashmir east to northeastern India and Bangladesh, Burma, Thailand south through the Malay Peninsula to Sumatra, Borneo, and Palawan
- S. l. lugubris in Java and Bali
This species was formerly included in Asian Drongo-Cuckoo.
Forest and forest edges.
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2017. The eBird/Clements checklist of birds of the world: v2017, with updates to August 2017. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- BF Member observations
- BirdForum Opus contributors. (2021) Square-tailed Drongo-Cuckoo. In: BirdForum, the forum for wild birds and birding. Retrieved 14 April 2021 from https://www.birdforum.net/wiki/Square-tailed_Drongo-Cuckoo