Sometimes they can make out where a nest came from or if it is man-made or not. They will probably live there if they don't have a choice, but some birds would rather build their own nest.
BIRDS
birds live in nests in a tree and sleep in a nest
Bird's nest soup is a Chinese delicacy. It is made from the nest of a swiftlet, a bird in southeast Asia.
birds nest
Because the design is based on a birds nest. If you look at the contruction of an actual birds nest it is very similar to the bird cage. Especially if viewed from the air.
worms and alot of de'm
Nests are simply used as nurseries. Birds do not stay in a nest once the babies are old enough to live on their own. Birds live in trees and bushes. Females only stay in a nest if there are eggs or little ones.
they will stay in their nest for few days and go fly with adult birds and eventually live in theforest.
Some birds live in a burrow in the ground; others live in a hollow in a tree trunk.
like most birds an eagle builds a nest
It's called a cage.
It is literally a birds nest made from edible fibers. Usually a swallow's nest :)