Return from the south to build nests for their young.
Sing all day.
Fly south for warmth.
Shed their feathers.
Ask the sun to help them grow.
Send sap to their branches to help growth.
Send water to their branches to help growth.
Grow their roots longer to help growth.
Strawberries and onions cannot be grown during the summer.
In the summer, strawberries and onions begin to grow and ripen, which means that they are ready to eat.
Strawberries and onions only grow during the winter.
They are born.
They become an adult insect.
They die because they don't like the warm weather.
Go to work or school.