The song remains the same: Coactivators and sex differences in the songbird brain

► RPL7 mRNA and protein expression are sexually dimorphic in the P1 and adult zebra finch brain. ► SRC-1 protein expression is sexually dimorphic in the adult zebra finch brain. ► Song is not altered by knocking down RPL7 protein during song nuclei development. ► Coactivators may play a role in organizing and activating the songbird brain.