'''Ferrins''' are a species of birds on [[Sel]], which is common to marshes in [[JindoJinDo]].{{glossary ref|Elantris|F}} They are particularly loud and talkative birds, which can be heard screaming at each other across entire marshes.
The JindoeeseJinDo have a proverb about ferrins: "A two-headed ferrin would never leave its nest," which is used when a person has found a new hobby or romantic interest.{{book ref|Elantris|43}}