Their usually sticks.
Some birds do not build nest's .why?
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.
Because you are stupid
most don't build nests.
Birds build nests to protect their eggs.
eagles or valtures
Places where birds build nests.