Storks and many birds apply the harshest survival of the fittest rules, often getting rid of the weakest chicks when there isn't enough food, sickness lingering around, and even control the population by tossing eggs. (Warning: video may cause upset as it

Storks and many birds apply the harshest survival of the fittest rules, often getting rid of the weakest chicks when there isn't enough food, sickness lingering around, and even control the population by tossing eggs. (Warning: video may cause upset as it