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  2. Nest - Wikipedia

    en.wikipedia.org/wiki/Nest

    A nest is a structure built for certain animals to hold eggs or young. Although nests are most closely associated with birds, members of all classes of vertebrates and some invertebrates construct nests. They may be composed of organic material such as twigs, grass, and leaves, or may be a simple depression in the ground, or a hole in a rock ...

  3. Structures built by animals - Wikipedia

    en.wikipedia.org/wiki/Structures_built_by_animals

    A so-called "cathedral" mound produced by a termite colony. Structures built by non-human animals, often called animal architecture, [1] are common in many species. Examples of animal structures include termite mounds, ant hills, wasp and beehives, burrow complexes, beaver dams, elaborate nests of birds, and webs of spiders.

  4. Bird nest - Wikipedia

    en.wikipedia.org/wiki/Bird_nest

    Deep cup nest of the great reed-warbler. A bird nest is the spot in which a bird lays and incubates its eggs and raises its young. Although the term popularly refers to a specific structure made by the bird itself—such as the grassy cup nest of the American robin or Eurasian blackbird, or the elaborately woven hanging nest of the Montezuma oropendola or the village weaver—that is too ...

  5. Nesting instinct - Wikipedia

    en.wikipedia.org/wiki/Nesting_instinct

    Bird's nest in grass. Nesting behavior is an instinct in animals during reproduction where they prepare a place with optimal conditions to nurture their offspring. [1] The nesting place provides protection against predators and competitors that mean to exploit or kill offspring. [2] It also provides protection against the physical environment. [1]

  6. Nest-building in primates - Wikipedia

    en.wikipedia.org/wiki/Nest-building_in_primates

    The nests may be 1 to 5 feet (0.30 to 1.52 m) wide in diameter and are constructed by individuals. Young animals nest with their mother but do not construct nests until three years of age, initially in close proximity to their mother. [19] Gorilla nests are distributed randomly and the tree species used appears to be opportunistic. [2]

  7. Groundhog - Wikipedia

    en.wikipedia.org/wiki/Groundhog

    The burrow is used for safety, retreat in bad weather, hibernating, sleeping, mating, and nursery. In addition to the nest, there is an excrement chamber. The hibernation or nest chamber is lined with dead leaves and dried grasses. [41] The nest chamber may be about twenty inches to three feet (51–91 cm) below ground surface.

  8. Bird - Wikipedia

    en.wikipedia.org/wiki/Bird

    The absence of nests is especially prevalent in open habitat ground-nesting species where any addition of nest material would make the nest more conspicuous. Many ground nesting birds lay a clutch of eggs that hatch synchronously, with precocial chicks led away from the nests ( nidifugous ) by their parents soon after hatching.

  9. Drey - Wikipedia

    en.wikipedia.org/wiki/Drey

    A drey is the nest of a tree squirrel, flying squirrel or ringtail possum. [1] Dreys are usually built of twigs, dry leaves, and grass, and typically assembled in the forks of a tall tree. [2] They are sometimes referred to as "drey nests" to distinguish them from squirrel "cavity nests" (also termed "dens").