noun
A specialist who determines the sex of newly hatched chicks, typically for poultry farming.
初生雛鑑別師は、孵化したばかりのひなの雌雄を見分ける専門家です。
A chicken sexer is a specialist who distinguishes the sex of newly hatched chicks.
Compound of 初生 (first-born, newborn), 雛 (chick), 鑑別 (discrimination, identification), and 師 (specialist, master).