The study aimed to characterise three breeds of pullets based on their biometric differentiation and the effects of age on their body linear measurement. The three breeds of pullets under consideration were Noiler (N), FUNAAB Alpha (FUN), and ISA Brown (ISA). This study used two hundred and five pullets raised from a day old. At the 19th, 21st, and 23rd week of rearing, the pullets were weighed individually, and linear body measurements were taken. There was no significantly different effect (