This bird is commonly known as Koel or Koyal.
The Asian Koel is a large, long-tailed, cuckoo at 45 cm. The male is bluish-black, with a pale green bill, rich red eyes, and grey legs and feet. The female is brownish above and whitish below, but is heavily striped and spotted brown on the underparts and white on the upperparts. She has an olive or green beak and red eyes.
Koels are very vocal, with a number of different calls.
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