A professional who castrates cockerels to prevent development of sexual characteristics. Respnsibilities include:

• Ascertains that cockerels have not been fed or watered for specified period of time.
• Binds legs and wings or pinions birds with weights and makes incision between cockerel's last two ribs or beneath and behind wings, using surgical knife or heated knife that cauterizes cut.
• Removes testicles, using forceps and heated knife or heated forceps.