Some birds do not build nest's .why?
no not all birds
Well birds build nests in them.
the birds know it by heart
in trees
Birds
Three animals other than birds that build nests: wasp, turtle, gorilla.
No birds build nests but goats may scrape out an area in the soil to get to the cooler ground.
Some birds that build their nests on the ground are flightless birds, such as emus and ostriches, but other birds which can fly are also ground-nesting. These birds include chickens, penguins, killdeer (a kind of plover), and water birds such as ducks, geese, swans etc.
Because you are stupid
Their usually sticks.
Birds build nests to protect their eggs.
"Fish gotta swim, birds gotta fly" Well most birds do. They eat, sleep, and reproduce. Some sing, some build nests, some migrate for the winter.