The Lonely Egg is a story about Bird and Worm on their daily adventures coming across an egg that is all by itself. They decide to help the egg until it hatches. The egg never ended up being lonely after all due to the friendship Bird and Worm provided for it.
Bird is a story about persistence. Bird continues to search for Worm, and through the struggle, manages to find his best friend in the end. Never give up what you are going after. Only you build the fence you will have to climb, over.