11 Facts About Bird nest

Bird nest is the spot in which a bird lays and incubates its eggs and raises its young.

For some species, a Bird nest is simply a shallow depression made in sand; for others, it is the knot-hole left by a broken branch, a burrow dug into the ground, a chamber drilled into a tree, an enormous rotting pile of vegetation and earth, a shelf made of dried saliva or a mud dome with an entrance tunnel.

The insulating factor of Bird nest lining is apparently so critical to egg survival that some species, including Kentish plovers, will restore experimentally altered levels of insulation to their pre-adjustment levels within 24 hours.

Base of the horned coot's enormous Bird nest is a mound built of stones, gathered one at a time by the pair, using their beaks.

Cavity Bird nest is a chamber, typically in living or dead wood, but sometimes in the trunks of tree ferns or large cacti, including saguaro.

The typical woodpecker Bird nest has a short horizontal tunnel which leads to a vertical chamber within the trunk.

Cavity-dwelling species have to contend with the danger of predators accessing their Bird nest, catching them and their young inside and unable to get out.

Cup Bird nest is smoothly hemispherical inside, with a deep depression to house the eggs.

Platform nest is a large structure, often many times the size of the bird which has built it.

Pendent Bird nest is an elongated sac woven of pliable materials such as grasses and plant fibers and suspended from a branch.

Sphere Bird nest is a roundish structure; it is completely enclosed, except for a small opening which allows access.