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Martha Bird is or was a female anthropomorphic bird.
A distant descendant of General Crow through her father, Martha Bird married Ratchet Gearloose and had at least one son, Fulton Gearloose — making her Gyro Gearloose's paternal grandmother. She is probably also the mother of Gyro's Uncle Euclid. Her brother married Daisy Duck's great-aunt Griseldis.