The chicken originated from India and East Asia and became domesticated in around 7000 BC. The chicken can trace its origins to the dinosaurs (and probably the same warm pool of primeval water that we emerged from if you go back far enough).
Chickens were spread by Polynesian seafarers and reached Easter Island in the 12th century CE, where they were the only domestic animal, with the possible exception of the Polynesian Rat. They were housed in extremely solid chicken coops built from stone. Traveling as cargo on trading boats, they reached the Asian continent via the islands of Indonesia and from there spread west to Europe and western Asia.
The Romans used chickens for oracles, both when flying and when feeding. The hen gave a favourable omen, when appearing from the left, like the crow and the owl.
For the oracle “ex tripudiis” according to Cicero, any bird could be used, but normally only chickens were consulted. The chickens were cared for by the pullarius, who opened their cage and fed them pulses or a special kind of soft cake when an augury was needed. If the chickens stayed in their cage, made noises, beat their wings or flew away, the omen was bad; if they ate greedily, the omen was good.
In 249 BCE, the Roman general Publius Claudius Pulcher had his chickens thrown overboard when they refused to feed before the battle of Drepana, saying “If they won’t eat, perhaps they will drink.” He promptly lost the battle against the Carthaginians and 93 Roman ships were sunk. Back in Rome, he was tried for impiety and heavily fined.
Sources: Wikipedia, Omlet