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
Bird-voiced tree frog streams and rivers where the dominant species include cypress, birch, tupelo, and buttonbush. The bird-voiced tree frog normally lives in trees, seldom descending to the ground except to breed. It is nocturnal and emerges at dusk to forage for insects and other small invertebrates. Breeding takes place in late spring and early summer, usually after heavy rains. The male calls from bushes and low vegetation close to the edge of temporary pools or ponds. The sound is a rapid, repetitive "wit-wit-wit-wit". The female lays a number of batches of six to fifteen eggs in shallow water. The tadpole stage lasts