In the post caption, Mr Weng claims there are over 200 crows and the noises they were making sounded like there was a “gang ...

But the latest research by Liao and her colleagues provides more evidence about crows’ ability to synthesize numbers to produce a sound and suggests that the skill is within their control.

Some Bishan residents are frustrated with the noisy crows in their neighbourhood that have been disrupting their lives. In a ...