The emu's nest is just a shallow hole in the ground, or a platform made of grass, lined with leaves, grass, twigs and bark.
sticks
Birds typically build their own nests for shelter, but some species may use abandoned nests from other birds.
Some birds that build their nests on the ground are flightless birds, such as emus and ostriches, but other birds which can fly are also ground-nesting. These birds include chickens, penguins, killdeer (a kind of plover), and water birds such as ducks, geese, swans etc.
Hedge sparrows are properly called dunnocks and they are not actually sparrows at all. They build their nests in dense shrubbery and hedgerows (see Sources and related links, below).
They use very damp and soft sticks to build leaves.
Nothing, they don't build nests.
most don't build nests.
twigs,grass,weads
Bare cliff ledges or the abandoned nests of other birds. They do not build their own nests.
Emus do not have any specific shelter at night time. They may shelter under large trees or near bushes, as long as they are not completely out in the open. They only ever build nests at breeding time; these nests are dug out of the ground and lined with sticks, leaves and grass.
Squirrels nest in trees or on the ground, using materials like twigs, leaves, moss, and fur to build their nests.
Adellie penguins use pebbles to build nests.