Egg embryo is adequately developed it hatches, i.e. breaks out of the egg's shell. Some embryos have a temporary egg tooth they use to crack, pip, or break the eggshell or covering. The largest recorded egg is from a whale shark, and was in size. Whale shark eggs typically hatch within the mother. At and up to , the ostrich egg is the largest egg of any living bird, though the extinct elephant bird and some dinosaurs laid larger eggs. The bee hummingbird produces the smallest known bird egg, which weighs half of a gram (around 0.02 oz). Some eggs laid
François Lays renamed). If the quality of his voice was universally admired, his lack of physical elegance, his short and stocky build and the southern accent he never completely managed to lose predisposed Lays to comic rather than dramatic roles, particularly middle-aged buffo characters, in which, "singing of love and good wine, he proved to be sublime". Anacreon was one such role. Lays played the character again in 1803 in the opera Cherubini dedicated to the ancient Greek poet. A few decades later, Castil-Blaze – referring to the work by Grétry – commented: The opera sparkles with charming melodies; the role of