Birds lay hard-shelled eggs that are typically incubated by the parents. The eggs are usually laid in a nest, which is built by the parents to provide protection for the eggs and chicks.
Reptiles also lay hard-shelled eggs, but they are typically not incubated by the parents. The eggs are laid in a variety of locations, such as in the ground, in trees, or in water.
Amphibians lay soft-shelled eggs that are usually laid in water. The eggs hatch into tadpoles, which are aquatic and have long tails. The tadpoles eventually metamorphose into adults, which are terrestrial and have short tails.