In China, people not only walk the dogs, but also walk the birds.
It is kind of a tradition where many old retried men will take the bird cages for a walk in the morning and gather around somewhere, in order to let their birds get some fresh air, as well as to meet other birds, so they can sing at each other to socialize. While the birds are socializing, the birds' owners are also socializing. It is also good for the owners who not only get to take a walk to get some exercise and fresh air but also get to socialize with other bird keepers.
It is a scene where lots of old folks and birds cages are gathered at one place, usually in a park, or somewhere relatively quiet and with trees, or sometimes in a tea house.
Oh, and here is a bird who can say "hello" in Chinese lol.