Chicken

A chicken is a bird that is commonly domesticated for food. Chickens are one of the few birds that cannot fly. Other notable exceptions include the emu and the penguin. Chickens lay eggs.

A rooster is a male chicken. Roosters received their names due to the tendency of roosters to "roost" over a clutch of eggs.

Unlike other creatures, chickens are able to survive for some time without their heads. Chickens are mentioned in the Bible:

O Jerusalem, Jerusalem, thou that killest the prophets, and stonest them which are sent unto thee, how often would I have gathered thy children together, even as a hen gathereth her chickens under her wings, and ye would not! (Matthew 23:37)

Creation scientists haven't yet figured what came first: the chicken or the egg. This is known as the creation conundrum. Evolutionists maintain that the egg must have come first, since, a true chicken can only hatch from a true chicken egg, but two parent birds which were not quite 'genetically' chickens can in theory have fertilised and laid it, and given rise to the first true chicken. How one defines what is genetically a true chicken and what is not quite a chicken is, of course, open for debate.