Heard these birdies everywhere, with their unmistakable, shrill, sharp and ear-popping calls, which came across beautifully in the video above.
They prefers staying in a dense thick forest with thick trees and bamboos, light woodland and cultivation areas.
Large seeded fruits are sometimes quickly regurgitated near the parent tree while small seeded fruits are ingested and are likely to be deposited at greater distances from the parent tree.
Females produces rhythmic 'wook-wook' call and short, high-pitched whistles.
We can divide the Shanghai-area brood-parasitic cuckoos into two categories: the mainly grey, slender-bodied Cuculus cuckoos and the non- Cuculus cuckoos.
Often shows browner head, white moustachial stripe and supercilium, and dark ear patch and submoustachial stripe.