Common ostrich other members of Palaeognathae and thus the flighted tinamous are the sister group to the extinct moa. It is distinctive in its appearance, with a long neck and legs, and can run for a long time at a speed of or even up to about , the fastest land speed of any bird. The common ostrich is the largest living species of bird and lays the largest eggs of any living bird (extinct elephant birds of Madagascar and the giant moa of New Zealand laid larger eggs). The common ostrich's diet consists mainly of plant matter, though it also eats
François Lays Cherubini made the courageous decision to use his discretionary powers and take personal responsibility for authorising a special performance whose takings would be divided equally between the Académie and Lays. Even if it is unclear what right the director of the École royale de musique et de déclamation had to make such a decision, the performance did in fact take place at the Opéra on 20 November 1826. The programme consisted of Boieldieu's opéra comique "Le calife de Bagdad"; the second act of "Anacréon chez Polycrate", in which Lays played his most famous role for the last time; and the