The nest is a small bracket, sometimes containing bits of fern or bark, that may be glued to a tree or cliff but usually is made in a mountain or coastal cave.

How do swiftlets make their nests?

Instead of twigs, feathers and straw, these swiftlets make their nest only from strands of their gummy saliva, which hardens when exposed to air. Once the nests are harvested, they are cleaned and sold to restaurants.

Where do birds build nests?

Hedges, bushes, thickets and trees

Many birds make their nests in hedges, bushes, thickets and small trees. The Chiffchaff and the Blackcap are small birds that nest in thickets of bramble. Hedges, bushes and thickets provide protection, from predators and the weather, for both the eggs and the chicks.