Chickens are extremely chatty. Most chicken owners will be able to identify certain calls, however the motivations behind some chicken noises is less clear. Tamsin Cooper helps decipher intention and emotion in chicken language.
Source: Backyard Poultry, June 3, 2019. Link.
Chickens are highly social beings. They rely on body language and vocal calls to communicate information about their environment and their emotions to one another. Chicken noises and displays enable them to maintain a cohesive group, and maximize their safety and reproduction, while reinforcing their hierarchy.