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 the Tuileries under the directorship of Giovanni Paisiello. As such, three years later, on 2 December 1804, Lays was the lead soloist in the music accompanying Napoleon's coronation as emperor. The ensuing celebrations culminated at the Hôtel de Ville on 16 December with Lays and Chéron singing the cantata "Trasibule", specially written for the occasion by Henri-Montan Berton. In 1810, when Napoleon divorced Josephine and entered into a second marriage with the Austrian Archduchess Marie Louise, Lays was the obvious choice to perform at the wedding ceremony. Meanwhile, his stage activity continued unabated, and in 1807 he was also appointed