The term 'egg-hatching spot' can be summarized as a NEST, which is a four-letter word. A NEST is a structure built by certain animals, such as birds, to hold their eggs and provide protection while they are incubating. The NEST is usually made of twigs, grass, mud, and other materials, and is often lined with feathers or fur. Nests are also used by some species of reptiles and amphibians to lay their eggs.