"This piece is a typical object of the Kunst-und Wunderkammer (Art and Curiosities Chamber) because of the combination of natural material and noble gold work. Over the fragmented base is a moor leading a leashed ostrich carrying its own egg. Furthermore it carries a horseshoe in its beak, already in the 16th century considered a symbol for good luck. The motif of the iron eating ostrich comes from antiquity and symbolizes "strength through resistance because the bird has such strength that it can digest and nourish itself from stone and iron. The coral is appropriate because it supposedly heals "boiling of the intestines and the blood and protects against the evil eye and magic."
I had no idea that the ostrich carried such symbols! "...digest and nourish itself from stone and iron." Wow!