The term 'pullet' is a young female chicken, usually less than one year old. It is derived from the Old French word 'poulet', which means 'young chicken'. The term 'HEN' is also used to refer to a female chicken, and is derived from the Old English word 'hana'. Both terms are used to refer to the same type of bird. Pullets are often used for egg production, as they are more efficient at laying eggs than older hens.