most bird nests serve not only as shelters but also as places to hatch and rear te young.some catepillars spin cocoons tightly around themselves as places to stay are going through their final stage of growth. as soon as they emerge as moths or butterflies, hey destroy the cocoons. each night a chimpanzee in the wild builds a new nest of leaves and branches as a soft place to sleep. a spider's web may be both a nest is the storage of nuts.