eagles or valtures
Some birds do not build nest's .why?
Birds typically build their own nests for shelter, but some species may use abandoned nests from other birds.
The large raptors such as eagles and hawks are the birds that live in eyries. An eyrie is defined as the nest of an eagle or other bird of prey.
Well birds build nests in them.
the birds know it by heart
Birds
in trees
No birds build nests but goats may scrape out an area in the soil to get to the cooler ground.
Because you are stupid
Their usually sticks.
Birds build nests to protect their eggs.
No, weaver birds typically build individual nests for mating purposes and do not allow other birds to join their nests. Each pair of weaver birds will construct their own nest as part of their elaborate courtship display.