Pigeons love straw and will place a piece at each potential nest spot. The cocks are very creative which makes me laugh when I clean up because I find straw in all kinds of improbable locations. Once they claim a nest site, the hen usually lays the first egg within a couple of days and a second egg one to two days later.
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).
Yes, birds use a variety of materials, both natural and unnatural, to build their nests. Lint would be an ideal material because it is soft and easy to manipulate.
Weaver birds use a variety of plant materials to build their nests, including strips of grass, leaves, twigs and roots.
Hornets construct their nests by chewing up wood fibers and mixing them with saliva to create a papery material. They then use this material to build their nest in layers, forming a distinctive hexagonal shape.
sticks
Birds typically build their own nests for shelter, but some species may use abandoned nests from other birds.
They use very damp and soft sticks to build leaves.
Nothing, they don't build nests.
twigs,grass,weads
Crocodiles typically make their nests out of vegetation such as leaves, grass, and sticks. They often build their nests close to water bodies like rivers or swamps to keep the eggs safe and provide easy access to water for the hatchlings.
Bare cliff ledges or the abandoned nests of other birds. They do not build their own nests.
Squirrels nest in trees or on the ground, using materials like twigs, leaves, moss, and fur to build their nests.