Why might a political cartoonist portray the Ottoman empire as a turkey?

Islam was the official religion of the Ottoman Empire. The highest position in Islam, caliphate, was claimed by the sultan, after the defeat of the Mamluks which was established as Ottoman Caliphate ... Despite all this, the Sultan also had a right to the decree, enforcing a code called Kanun (law) in Turkish. The Ottomans were known for their achievements in art, science and medicine. Istanbul and other major cities throughout the empire were recognized as artistic hubs, especially during the reign of Suleiman the Magnificent

Because this empire was centered in present day turkey.