What are the breeds of those colorful chickens in the picture?

The sturdier ones are Taoyuan chickens, a more common type of egg-laying chicken, which can be identified by whether their lower bellies are wide and drooping; the wider the crotch, the higher the egg-laying rate, and these chickens are usually suitable for raising in farm gardens!

Some of the smaller ones in the lower left corner are growing broilers, which are characterized by a well-proportioned body, quick action, narrow tail, less belly fat, and overall weight gain!