"It's the sound you most think of as an Australian crow caw. "By comparison, the Torresian crow's standard call has a duck-like quacking quality to it. "The little crow is a lot like Torresian ...

It is a familiar sound in the city, which is home to one-fifth of the world’s collared crows. These birds give off a short, low-pitched caw when they detect danger or birds they do not recognise.