Cut a section from a cardboard egg carton. Spread glue around the outside of the cup. Press the end of a piece of yarn into the glue, and wind the yarn around the cup.
Wash and dry an uncooked egg. Gently poke a small hole at one end of the egg and a slightly larger hole at the other end. Insert a toothpick into the larger hole to break the yolk. Hold the egg over a bowl, and blow into the smaller hole to force the egg white and yolk out the other end. Rinse the eggshell with water.
Glue pieces of yellow yarn for straw inside the nest. Paint the eggshell. When it dries, break off pieces of the shell to make it half the size. Add features cut from paper, and glue the bird inside the nest.