Can animals adapt to life in the big city?
Biologists have found that urban birds have changed the volume and pitch of their calls so that they can be heard over the sound of cars and busy city life. Calls and songs are important for birds, they use them to mark their territory, to alert others to danger, and to attract mates.
In some cases, they have learnt new human sounds to add to their calls, like this magpie here:
Other animals, like Common Brushtail Possums have been able to live in cities by having a flexible and generalist diet. They have evolved to be bolder and more comfortable amongst humans, buildings and cars.