Te specific study of the birds nest is calle "ornithology".
Ornithology
twigs nest
It's called a cage.
A birdhouse.
The nest was built by birds.
A pond or lake
Birds mate after and before making a nest
The siblings in a birds nest are called a brood, and when a bird sits on her nest it is called brooding.
A nest, or a bird house.
It's called a cage.
A birdhouse.
Homes
They're called birds.
It was called the Birds Nest.
* A badger's nest is called a sett. * An eagle's nest is called an eyrie.
As birds, peacocks nest.
A nest, or a bird house.
A bird house is called a nest.
a nest