Mr Bird was a male anthropomorphic bird.
The brother of Gyro Gearloose's paternal grandmother, and, like her, a descendant of General Crow, Mr Bird married elegant Griseldis, a sister of Scrooge McDuck's mother. A portrait of Mr Bird found its way to the house of Donald Duck in the 1960's.
The same account which identified the man in the portrait as Griseldis's husband also stated that the two had three children, two boys and a girl, though the accuracy of these facts is cast into doubt by this source's insistence, against all other accounts of Duck genealogy, that these children were Cuthbert Coot as well as Donald Duck's father and Gladstone Gander's mother and.
Behind the scenes
In Grote's curious Duck genealogy, one of Griseldis's two sons marries a nameless sister of Scrooge McDuck, Elvira Duck and Otto Duck and becomes the father of Donald Duck. It is in this way that, as the mother of Otto Duck's brother-in-law, Griseldis becomes a great-aunt of Daisy's (the relation originally specified for Griseldis). The sheer idea that Scrooge, Elvira and Otto were siblings is, however, in conflict with most every other work of Duck genealogy, not to mention this ludicrous notion of Donald's parentage; however, the idea that a sibling of Otto Duck married a son of Griseldis, thereby explaining her relationship to Daisy, may still be retained even if the rest of the dubious premise is soundly rejected.