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  2. 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 ...

  3. Structures built by animals - Wikipedia

    en.wikipedia.org/wiki/Structures_built_by_animals

    Amongst birds, 5% of all birds use mud and stones in their nest for toughness and compressive strength. [17] Males in some species of crab will construct structures out of mud to attract mates and avoid predators. [23] Uca musica, also known as fiddler crabs, will build short, wide “hoods” out of sand.

  4. 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 ...

  5. Tool use by non-humans - Wikipedia

    en.wikipedia.org/wiki/Tool_use_by_non-humans

    The complexity of bird nests varies markedly, perhaps indicating a range in the sophistication of tool use. For example, compare the highly complex structures of weaver birds [115] to the simple mats of herbaceous matter with a central cup constructed by gulls, and it is noteworthy that some birds do not build nests, e.g. emperor penguins. The ...

  6. American dipper - Wikipedia

    en.wikipedia.org/wiki/American_dipper

    The American dipper's nest is a globe-shaped structure with a side entrance, close to water, on a rock ledge, river bank, behind a waterfall or under a bridge. The normal clutch is 2–4 white eggs, incubated solely by the female, which hatch after about 15–17 days, with another 20–25 days to fledging. The male helps to feed the young.

  7. Common murre - Wikipedia

    en.wikipedia.org/wiki/Common_murre

    The common murre nests in densely packed colonies (known as "loomeries" [citation needed]), with up to twenty pairs occupying one square metre at peak season. [citation needed] Common murres do not make nests and lay their eggs on bare rock ledges, under rocks, or the ground. Despite the high density of murre breeding sites, sites may vary ...

  8. How birds get their colors. A visual guide to your ...

    www.aol.com/birds-colors-visual-guide...

    The species were chosen based on data from Project FeederWatch, a citizen science program run by the Cornell Lab, which allows people to submit sightings of birds they've seen locally.

  9. Bird - Wikipedia

    en.wikipedia.org/wiki/Bird

    Some desert birds depend on water sources and sandgrouse are particularly well known for congregating daily at waterholes. Nesting sandgrouse and many plovers carry water to their young by wetting their belly feathers. [166] Some birds carry water for chicks at the nest in their crop or regurgitate it along with food.